This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Marcus writes an opinion piece arguing that homework should be shorter, with a reason about time consumption. Marcus provides the time reason but needs stronger support: currently, it might lack specifics, and the question suggests ways to add facts like survey data. Overall, Marcus's reasons are partially supported—he could improve by adding verifiable data. Choice A is correct because Marcus could strengthen his time reason by adding a specific fact like "a class survey showing average homework time is 75 minutes on weeknights," which provides verifiable data that proves the reason with measurable evidence. Choice B is incorrect because this suggests adding another opinion ("homework is the worst") instead of factual support; students sometimes think emphasizing opinions counts as proof, but adding specific facts like statistics makes the writing more persuasive and evidence-based. To help students support reasons with facts and details: Teach the Opinion-Reason-Fact/Detail structure explicitly—Opinion: "I believe we should have longer recess"; Reason 1: "because it improves focus" (why opinion is true); Fact supporting Reason 1: "Research by Dr. Smith shows students who have 45-minute recess score 15% higher on afternoon tests than students with 30-minute recess" (specific fact proves reason); Reason 2: "because it promotes health"; Detail supporting Reason 2: "For example, when our school extended recess last year, the nurse reported 30% fewer playground injuries because students were less rushed" (specific example proves reason); use graphic organizer: boxes connected with arrows showing Opinion → Reason → Fact/Detail for each reason; teach types of factual support—Statistics/Data ("25% of students..." "It costs $50"), Research ("Studies show..." "According to scientists..."), Examples ("For instance, when..." "Last year, our class..."), Expert opinions ("Nutritionists recommend..."), Observations ("I noticed that..." with specifics), Textual evidence for text-based opinions ("In Chapter 3, the character..."). Watch for: students who state reasons but don't support them with facts or details—just move to next reason; students who give more opinions as "support" (Reason: "It's fun." Support: "It's really enjoyable." ← both opinions); students who use vague support ("people like it," "it's good") instead of specific facts; students who give facts unrelated to the reason (Reason: "It's healthy." Fact: "It costs $5." ← true but doesn't prove health claim).

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Maya writes an opinion piece arguing that the town needs bike lanes for safety. Maya provides a safety reason and supports it with specific observations, while other potential supports are vague opinions like "bike lanes would look nicer" or "everyone knows it's dangerous." Overall, Maya's reasons are well-supported when using specific details, but some options are irrelevant or opinion-based. Choice B is correct because the detail "Last month, I counted 9 cars passing within one bike-length of riders on Oak Street" is a specific observation that proves the safety reason with concrete, relevant evidence of danger. Choice C is incorrect because this accepts a vague statement ("Everyone knows biking is dangerous") as detailed support when details must be specific examples, not general claims; students sometimes use vague support thinking it's factual, but specific details like observations make the opinion more convincing. To help students support reasons with facts and details: Teach the Opinion-Reason-Fact/Detail structure explicitly—Opinion: "I believe we should have longer recess"; Reason 1: "because it improves focus" (why opinion is true); Fact supporting Reason 1: "Research by Dr. Smith shows students who have 45-minute recess score 15% higher on afternoon tests than students with 30-minute recess" (specific fact proves reason); Reason 2: "because it promotes health"; Detail supporting Reason 2: "For example, when our school extended recess last year, the nurse reported 30% fewer playground injuries because students were less rushed" (specific example proves reason); use graphic organizer: boxes connected with arrows showing Opinion → Reason → Fact/Detail for each reason; teach types of factual support—Statistics/Data ("25% of students..." "It costs $50"), Research ("Studies show..." "According to scientists..."), Examples ("For instance, when..." "Last year, our class..."), Expert opinions ("Nutritionists recommend..."), Observations ("I noticed that..." with specifics), Textual evidence for text-based opinions ("In Chapter 3, the character..."). Watch for: students who state reasons but don't support them with facts or details—just move to next reason; students who give more opinions as "support" (Reason: "It's fun." Support: "It's really enjoyable." ← both opinions); students who use vague support ("people like it," "it's good") instead of specific facts; students who give facts unrelated to the reason (Reason: "It's healthy." Fact: "It costs $5." ← true but doesn't prove health claim).

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Jamal writes an opinion piece arguing that our school should start a recycling program. Jamal provides 2 reasons: it reduces trash and saves money. For the first reason "it reduces trash," Jamal supports it with specific data: the custodian counted 6 full bags daily in the cafeteria. For the second reason "saves money," Jamal gives no specific support—only states "Recycling is cheaper," which is another opinion without factual backing. Overall, Jamal's reasons are partially supported—one has facts, the other doesn't. Choice B is correct because one reason lacks facts or details to prove it saves money—Jamal only says "Recycling is cheaper," which is just another opinion or claim without specific factual support like cost comparisons, budget data, or examples of actual savings. Choice A is incorrect because Jamal does give an opinion (school should start recycling) and his trash bag count is relevant to his trash reduction reason, not disconnected. Students sometimes give more opinions after reasons instead of facts and details, thinking any statement after a reason counts as support even when it's just another opinion or vague claim. Supporting your reasons with facts and details makes your opinion convincing—Jamal could strengthen his money-saving reason by adding specific data like "According to the district office, schools with recycling programs save an average of $200 monthly on waste disposal fees" or "When Lincoln Elementary started recycling, they reduced trash costs by 30%." To help students support reasons with facts and details: Teach types of factual support—Statistics/Data ("25% of students..." "It costs $50"), Research ("Studies show..." "According to scientists..."), Examples ("For instance, when..." "Last year, our class..."), Expert opinions ("Nutritionists recommend..."); use sentence frames: "[Reason]. For instance, [specific example]." "[Reason]. Research shows that [specific statistic/finding]." Watch for: students who state reasons but don't support them with facts or details—just move to next reason; students who support only first reason, forget to support others; teach research skills to find factual support.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Marcus writes an opinion piece arguing that the class should use assigned seats. Marcus provides 2 reasons: it reduces talking and helps groups work. For the first reason "it reduces talking," Marcus supports it with specific data: the teacher recorded 5 reminders during free seating but only 2 with assigned seats. For the second reason "helps groups work," Marcus gives no specific support—only states "Groups feel calmer," which is vague without specific examples or data. Overall, Marcus's reasons are partially supported—one has facts, the other doesn't. Choice A is correct because adding a specific example of a group finishing faster with assigned seats would provide concrete detail to support the group-work reason—for instance, "When we had assigned seats last month, my science group finished our volcano project in 2 days instead of the usual 4 days" shows how assigned seats specifically help group productivity with a real, measurable example. Choice B is incorrect because adding the opinion "Everyone agrees with me" doesn't provide factual support—it's just another opinion without facts or details to prove the reason, and stopping there leaves the reason unsupported. Students sometimes give more opinions as "support" or think stating reasons louder makes them more convincing without adding actual facts or details. Supporting your reasons with facts and details makes your opinion convincing—Marcus's talking reason is well-supported with teacher data, but his group-work reason needs similar concrete support like specific examples of improved group performance or time comparisons. To help students support reasons with facts and details: Practice adding support: give opinion with unsupported reasons, students add facts and details; teach types of support including specific examples and time measurements; use sentence frames: "[Reason]. For instance, [specific example]." Watch for: students who use vague support ("Groups feel calmer") instead of specific facts; students who support only first reason, forget to support others; Model with examples showing before/after comparisons.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Chen writes an opinion piece arguing that our town needs more bike lanes. Chen provides 3 reasons: biking is safer, traffic is lower, and it helps the environment. For the first reason "biking is safer," Chen supports it with specific data: the city report showing 12 bike crashes last year on streets without bike lanes. For the second reason "traffic is lower," Chen includes the detail that 40 cars line up at pickup each day. For the third reason "it helps the environment," Chen gives no specific support—only states "Bikes are clean," which is vague and not factual. Overall, Chen's reasons are partially supported—some have facts, others don't. Choice C is correct because "The city report shows 12 bike crashes on streets without bike lanes" shows Chen supports a reason with a specific fact—this is concrete data from an official source (city report) with a specific number (12 crashes) that directly proves the safety reason by showing the danger of not having bike lanes. Choice A is incorrect because "Bikes are clean" is a vague statement without specific facts or details—it doesn't provide measurements, statistics, or concrete examples of how bikes help the environment. Students sometimes accept vague statements ("people like it," "everyone thinks so") as specific facts when specific facts have numbers, measurements, or concrete details. Supporting your reasons with facts and details makes your opinion convincing—Chen's safety reason is well-supported with city data, but his environment reason needs specific support like "Cars emit 4.6 metric tons of carbon dioxide yearly while bikes produce zero emissions" or "When our neighbor city added bike lanes, air quality improved by 15%." To help students support reasons with facts and details: Teach what makes support STRONG—specific not vague ("Studies show 30% increase" not "studies show it's good"), relevant not irrelevant (fact must prove THIS reason), sufficient (each reason needs support); use graphic organizer: boxes connected with arrows showing Opinion → Reason → Fact/Detail for each reason. Watch for: students who use vague support ("people like it," "it's good") instead of specific facts; students who don't provide factual support for each reason—maybe support one but not others; Model with examples; Practice identifying and adding factual support.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Keisha writes an opinion piece arguing that the playground needs new swings. Keisha provides 2 reasons: old swings are unsafe and more swings reduce waiting. For the first reason "old swings are unsafe," Keisha supports it with specific detail: the chain on Swing 3 is missing two links. For the second reason "more swings reduce waiting," Keisha provides the specific data that she timed recess and students waited about 6 minutes. Overall, Keisha's reasons are well-supported with specific facts and details. Choice B is correct because "The chain on Swing 3 is missing two links" is the detail that supports the safety reason—this specific, concrete observation (exact swing number, exact problem) directly proves the swings are unsafe by showing a specific safety hazard. Choice A is incorrect because "Students waited about 6 minutes to use the swings" supports the waiting reason, not the safety reason—this fact is relevant to why more swings are needed to reduce wait time, not to safety concerns. Students sometimes give facts that are true but don't support the reason (irrelevant), or don't recognize which fact supports which reason in multi-reason arguments. Supporting your reasons with facts and details makes your opinion convincing—Keisha effectively matches each reason with relevant, specific support: safety concern with physical evidence of damage, waiting problem with time data. To help students support reasons with facts and details: Teach that support must be RELEVANT (proves this reason) and SPECIFIC (not vague); practice matching facts to correct reasons in multi-reason arguments; emphasize checking that each fact actually supports the reason it's paired with. Watch for: students who give facts unrelated to the reason; students who mix up which facts support which reasons; teach to verify relevance—ask "Does this fact prove THIS specific reason?" Provide graphic organizers showing clear connections between each reason and its supporting facts.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Amir writes an opinion piece arguing that the library should buy more graphic novels. Amir provides 2 reasons: more kids will read and books will be shared more fairly. For the first reason "more kids will read," Amir supports it with specific observation: last month the graphic novel shelf was empty 4 afternoons. For the second reason "books will be shared more fairly," Amir gives no specific support—only states "It's only right," which is another opinion without factual backing. Overall, Amir's reasons are partially supported—one has facts, the other doesn't. Choice A is correct because "The graphic novel shelf was empty 4 afternoons last month" is the fact that supports Amir's reading reason—this specific observation (4 specific afternoons, last month timeframe) shows high demand for graphic novels, which proves more kids would read if more were available. Choice B is incorrect because "It's only right" is not a fact supporting the fairness reason—it's just another opinion or vague statement without specific data, examples, or concrete details about how book distribution would be more fair. Students sometimes confuse reasons with facts—think stating reason is enough without factual support, or accept another opinion ("It's better," "It's good") as factual support when facts must be verifiable, specific information. Supporting your reasons with facts and details makes your opinion convincing—Amir's reading reason is supported by concrete observation data, but his fairness reason needs specific support like "Currently, we have 200 fiction books but only 15 graphic novels, even though 40% of students prefer graphic novels according to our library survey." To help students support reasons with facts and details: Teach difference between reason, fact, and detail—practice identifying: give statements, students sort as opinion/reason/fact/detail; teach types of factual support including Observations ("I noticed that..." with specifics); use sentence frames: "[Reason]. For instance, [specific example]." Watch for: students who state reasons but don't support them with facts or details; students who give more opinions as "support"; teach to use real, verifiable information; Provide graphic organizers showing Opinion-Reason-Fact structure.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Jamal writes an opinion piece arguing that our school needs bike racks. The question asks which detail supports safety as a reason. Jamal needs to provide specific facts or details that prove bike racks would improve safety. Choice A "Bike racks would look nicer" is about appearance, not safety. Choice B "Twenty students said they like bikes" is about preference, not safety. Choice C "Last week, three bikes fell over because they were chained to a fence" is a specific detail showing a safety problem that bike racks would solve. Choice D "Bike racks are the best idea, and everyone agrees" is just another opinion without factual support. Choice C is correct because "Last week, three bikes fell over because they were chained to a fence" is a specific detail that directly supports the safety reason. This concrete example shows an actual safety incident that occurred because students don't have proper bike racks. The detail is specific (tells when: last week, what happened: three bikes fell, why: chained to fence) and relevant (proves bike racks would prevent this safety issue). This shows strong support because the detail provides a real example of a safety problem that bike racks would solve. Supporting reasons with facts and details makes opinion writing convincing because it shows real evidence, not just personal feelings. Choice A is incorrect because "Bike racks would look nicer" supports an appearance reason, not a safety reason—it's irrelevant to safety concerns. Students sometimes give facts that are true but don't support the specific reason being discussed. Choice B is incorrect because student preferences don't prove safety benefits. Choice D is incorrect because it's just another opinion ("best idea") without any factual support, and claiming "everyone agrees" is a vague statement, not a specific fact or detail. Supporting your reasons with facts and details makes your opinion convincing. Anyone can say "I believe X" and give reasons "because Y," but when you support reasons with specific facts ("Studies show..."), statistics ("25% of..."), research, or specific details ("For example, when..."), you prove your reasons are valid. This shows you've thought carefully, researched, and can back up your opinion with evidence. Opinions supported by facts and details are much more persuasive and credible than opinions supported only by more opinions. To help students support reasons with facts and details: Teach the Opinion-Reason-Fact/Detail structure explicitly—Opinion: "I believe we should have bike racks"; Reason 1: "because it improves safety" (why opinion is true); Detail supporting Reason 1: "Last week, three bikes fell over because they were chained to a fence" (specific example proves reason); teach difference between reason, fact, and detail—Reason: general explanation ("because it's safer"); Fact: specific verifiable info ("The safety committee reported 5 bike accidents this year"); Detail: specific example ("For example, when bikes fell last week..."); practice identifying: give statements, students sort as opinion/reason/fact/detail; teach what makes support STRONG—specific not vague, relevant not irrelevant (fact must prove THIS reason), sufficient (each reason needs support). Watch for: students who give facts unrelated to the reason (Reason: "It's safer." Fact: "It costs $500." ← true but doesn't prove safety claim); students who confuse reason with fact (think stating reason IS factual support); emphasize: Support must be RELEVANT (proves this reason) and SPECIFIC (not vague); Provide graphic organizers showing Opinion-Reason-Fact structure; Model with examples showing how details must match the reason they support.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Sofia writes an opinion piece arguing that students should have less homework. Sofia provides 2 reasons: kids need sleep and kids need family time. For the first reason "kids need sleep," Sofia supports it with specific fact: the CDC recommendation that children ages 6-12 need 9-12 hours nightly. For the second reason "kids need family time," Sofia gives no specific support—only states "Families are happier without homework," which is another opinion without factual backing. Overall, Sofia's reasons are partially supported—one has facts, the other doesn't. Choice A is correct because adding a specific example of a night when homework reduced family time would provide concrete detail to support the family-time reason—for instance, "Last Tuesday, I spent 2 hours on math homework and missed our family game night" shows how homework specifically impacts family time with a real example. Choice B is incorrect because repeating her opinion in a louder, stronger sentence doesn't add factual support—it's still just an opinion without facts or details to prove the reason. Students sometimes think any support is good support without evaluating if it's specific and relevant, or confuse stating reasons louder with providing factual support. Supporting your reasons with facts and details makes your opinion convincing—Sofia's sleep reason is strong because she cites CDC recommendations (expert/authoritative source), but her family-time reason needs similar concrete support like survey data, specific examples, or research about family bonding time. To help students support reasons with facts and details: Practice adding support: give opinion with unsupported reasons, students add facts and details; require source attribution when possible: "According to..." "Research shows..." "In the text..."; teach how to find factual support—research in books, articles; survey classmates for data; observe and record specific details. Watch for: students who give more opinions as "support" (Reason: "It's fun." Support: "It's really enjoyable." ← both opinions); students who give facts unrelated to the reason; emphasize: Facts = verifiable (statistics, research, data, expert opinions); Details = specific examples, instances, observations; NOT just more opinions or vague statements.

This question tests 4th grade opinion writing skills: providing reasons that are supported by facts and details (CCSS.W.4.1.b). In opinion writing, students state their opinion, then give reasons (why the opinion is true), and THEN support each reason with facts and details (proof that the reason is valid). This creates a structure: Opinion → Reason (why) → Fact or Detail (proof). A reason is a general explanation ("because it's healthier," "because it saves money"). A fact is verifiable, specific information that proves the reason: statistics ("Students who exercise 30 minutes daily score 15% higher on tests"), research findings ("Studies show..."), data ("It costs $20 less"), expert opinions ("According to nutritionists..."), or specific measurements. A detail is a specific example, instance, or concrete description ("For example, when our school added a recycling program, we reduced trash by 50 bags per week," "In the story, the character shows bravery by climbing the cliff in Chapter 3"). The key is that facts and details are SPECIFIC and RELEVANT to the reason—they prove or demonstrate why the reason is true. Just giving another opinion ("It's better") or vague statement ("People like it") doesn't count as factual support. Each reason should have specific factual support, not just more opinions. Maya writes an opinion piece arguing that students should be allowed water bottles in class. Maya provides 3 reasons: it helps focus, prevents headaches, and saves time. For the first reason "it helps focus," Maya supports it with specific data: she asked 10 classmates and 7 said water helps them pay attention. For the second reason "prevents headaches," Maya provides the expert opinion from the school nurse: "Many headaches come from not drinking enough water." For the third reason "saves time," Maya gives no specific support—only states "It's faster," which is vague without specific time measurements or examples. Overall, Maya's reasons are partially supported—some have facts, others don't. Choice B is correct because her time-saving reason lacks a specific fact or detail—Maya only says "It's faster" without providing specific time data (like "Students spend 3 minutes walking to the fountain"), examples ("Yesterday, I missed 5 minutes of math getting water"), or comparisons to prove time is actually saved. Choice A is incorrect because not all reasons have proper support—the time-saving reason lacks specific facts or details, having only the vague claim "It's faster." Students sometimes think any statement after a reason counts as support even when it's just another opinion or vague claim, or don't understand what counts as fact (statistic, research, data, expert opinion) vs detail (specific example, instance, observation). Supporting your reasons with facts and details makes your opinion convincing—Maya's focus reason has survey data and her headache reason has expert opinion, but her time reason needs concrete support like "I timed myself—it takes 3 minutes to walk to the fountain and back, but only 5 seconds to sip from my water bottle." To help students support reasons with facts and details: Teach the Opinion-Reason-Fact/Detail structure explicitly; practice identifying what makes support STRONG—specific not vague, relevant not irrelevant; teach how to find factual support including timing/measuring for data. Watch for: students who use vague support ("it's good") instead of specific facts; students who don't provide factual support for each reason—maybe support one but not others; emphasize: Every reason needs specific factual or detailed support.