This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—"Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Chen writes an explanation about penguin adaptations. The body includes how penguins adapt to cold environments. The explanation has a conclusion that introduces new information about penguins flying, which was not explained in the body. Choice B is correct because Chen's conclusion introduces new information about penguins flying, not explained in the body. Conclusions should wrap up what was already explained, not bring up entirely new facts. Chen could improve by removing the new information and instead summarizing what was explained about penguin adaptations to cold, such as "These special features help penguins survive in freezing Antarctic waters." Choice A is incorrect because using a transition like "Finally" is actually helpful in conclusions, not confusing. Choice C incorrectly claims that restating and summarizing makes a conclusion too long, when these are exactly what conclusions should do. Choice D misunderstands that conclusions can and should reference key points from the body—the problem is introducing NEW information not mentioned before. To help students write effective conclusions for informational/explanatory writing: Teach the rule "No new major facts in conclusions"; use a T-chart comparing Good Conclusions (restate, summarize, final thought) vs Poor Conclusions (new facts, off-topic, too brief). Model revision: "Chen wrote about flying in his conclusion, but that wasn't in his body. Let's revise to summarize what he DID explain about cold adaptations." Practice with examples: "Which conclusion fits? A) 'Penguins also eat fish' (new fact) or B) 'These adaptations help penguins thrive in icy habitats' (summarizes)." Use highlighting: highlight body facts in one color, conclusion in another—check that conclusion color only wraps up body color facts. Watch for: students who save their most interesting fact for the conclusion; students who think conclusions must add something "extra" beyond summarizing; students who don't understand the difference between developing ideas (body) and wrapping them up (conclusion); students who want to impress readers with one more fact instead of providing closure.

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—“Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Example: If explanation is about how levers work (fulcrum, less force needed, examples), strong conclusion: "Now you can see how levers use a fulcrum to help us lift heavy objects more easily. This simple machine makes our work easier every day." (restates main idea + final thought). Weak conclusion: "Done." (too brief, no wrap-up). Weak: "There are also pulleys and wheels." (new information, doesn't conclude about levers). Missing conclusion: explanation just stops after last example without any wrap-up sentence. Marcus writes an explanation about deserts. The body includes facts about dry conditions, little rain, and special plants and animals. The explanation needs a strong concluding statement to wrap up. Choice A is correct because it includes a concluding statement: "In conclusion, deserts are dry places with little rain and special plants and animals" which summarizes the key points about deserts, uses transition word "In conclusion" and connects back to topic. Choice D is incorrect because it accepts "The end" as effective conclusion when it's too brief and doesn't restate or summarize. Students sometimes write "The end" or "Done" thinking it wraps up. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained three ways polar bears adapt to Arctic (thick fur, small ears, wide paws). Now I'll wrap up by restating: 'These special features help polar bears survive in extremely cold environments.' Final thought: 'Understanding these adaptations shows how animals change to fit where they live.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples; provide sentence frames: "Now you know that [main idea]. This [why it matters]." or "In conclusion, [summary of key points]. [Final thought]." Give feedback on common errors: "This conclusion is too brief. Add a sentence restating your main idea." or "This introduces new information. Instead, wrap up by summarizing what you already explained." Watch for: students who just stop after last detail without concluding; students who write "The end" or "Done" thinking it's sufficient; students who introduce completely new facts in conclusion instead of wrapping up. Common pitfall: students who copy introduction word-for-word; students who write vague conclusions ("That's all") that could apply to any topic; students who don't use transition words to signal conclusion; students who think longer conclusion is better even if it doesn't wrap up effectively; students who confuse adding more facts (body development) with wrapping up (conclusion).

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—"Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Keisha writes an explanation about plant growth in two drafts. Draft 1 ends "Seeds need water and sunlight" and stops right there. Draft 2 ends "Now you know plants need water, light, and time to grow strong." Draft 2 has a concluding statement while Draft 1 ends abruptly. Choice B is correct because Draft 2 ends "Now you know plants need water, light, and time to grow strong" which uses the transition phrase "Now you know" and restates the main ideas about what plants need to grow. This wraps up the explanation effectively. Draft 1 wraps up worse because it ends after "Seeds need water and sunlight" without any concluding statement, leaving the reader without closure. Effective conclusions wrap up the explanation, don't introduce new major information, and connect back to the topic. Choice C is incorrect because it claims Draft 1 is better for ending faster and using fewer words when actually Draft 1 lacks a conclusion—just stopping after a detail doesn't wrap up the explanation. Students sometimes think shorter is always better and don't recognize when explanation lacks conclusion. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained what plants need to grow (water, light, time). Now I'll wrap up by restating: 'Plants require these three things to thrive.' Final thought: 'Understanding plant needs helps us become better gardeners.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples. Watch for: students who just stop after last detail without concluding; students who think shorter is always better; students who don't recognize that explanation lacks conclusion.

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—“Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Example: If explanation is about how levers work (fulcrum, less force needed, examples), strong conclusion: "Now you can see how levers use a fulcrum to help us lift heavy objects more easily. This simple machine makes our work easier every day." (restates main idea + final thought). Weak conclusion: "Done." (too brief, no wrap-up). Weak: "There are also pulleys and wheels." (new information, doesn't conclude about levers). Missing conclusion: explanation just stops after last example without any wrap-up sentence. Yuki writes an explanation about chameleon adaptations. The body includes facts about camouflage and other adaptations. The explanation ends abruptly after the last detail about camouflage without any wrap-up. Choice B is correct because Yuki does NOT include a concluding statement—the explanation ends after the last detail without any wrap-up, leaving the reader without closure. Choice A is incorrect because it confuses the last body detail with a conclusion when it doesn't restate or summarize. Students sometimes confuse adding more facts (body development) with wrapping up (conclusion). To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained three ways polar bears adapt to Arctic (thick fur, small ears, wide paws). Now I'll wrap up by restating: 'These special features help polar bears survive in extremely cold environments.' Final thought: 'Understanding these adaptations shows how animals change to fit where they live.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples; provide sentence frames: "Now you know that [main idea]. This [why it matters]." or "In conclusion, [summary of key points]. [Final thought]." Give feedback on common errors: "This conclusion is too brief. Add a sentence restating your main idea." or "This introduces new information. Instead, wrap up by summarizing what you already explained.". Watch for: students who just stop after last detail without concluding; students who write "The end" or "Done" thinking it's sufficient; students who introduce completely new facts in conclusion instead of wrapping up. Common pitfall 2: students who copy introduction word-for-word; students who write vague conclusions ("That's all") that could apply to any topic; students who don't use transition words to signal conclusion; students who think longer conclusion is better even if it doesn't wrap up effectively; students who confuse adding more facts (body development) with wrapping up (conclusion).

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—"Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Carlos writes an explanation about chameleon adaptations. The body includes color change and long tongues as survival tools. The explanation includes a concluding statement that summarizes these adaptations. Choice A is correct because Carlos's conclusion summarizes color change and long tongues as survival tools, which connects directly to the topic of chameleon adaptations explained in the body. This shows an effective conclusion that wraps up the main points about how chameleons survive. Choice B is incorrect because talking about his favorite zoo animal is a personal opinion that doesn't wrap up the factual explanation about adaptations—conclusions should connect to the informational content, not personal preferences. Choice C incorrectly claims the conclusion repeats the introduction word-for-word, but the question indicates it summarizes the adaptations. Choice D misunderstands that conclusions should synthesize what was explained, not add new facts about habitats not mentioned in the body. To help students write effective conclusions for informational/explanatory writing: Teach students to check connection between body and conclusion—highlight adaptation facts in body, then check if conclusion mentions those same adaptations; model strong connections: "Body talks about color change and tongues. Conclusion summarizes both as survival tools. Perfect match!" Practice identifying conclusions that connect vs those that stray off-topic. Use arrows to draw connections from body facts to conclusion summary; create "conclusion connection test"—can you trace each part of conclusion back to something in the body? Teach that personal opinions belong in opinion writing, not informational conclusions. Watch for: students who include personal feelings in informational conclusions; students who think any mention of the topic counts as connection; students who add new categories (habitats) instead of summarizing explained categories (adaptations); students who don't see that effective conclusions specifically reference the main points from the body.

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—“Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Example: If explanation is about how levers work (fulcrum, less force needed, examples), strong conclusion: "Now you can see how levers use a fulcrum to help us lift heavy objects more easily. This simple machine makes our work easier every day." (restates main idea + final thought). Weak conclusion: "Done." (too brief, no wrap-up). Weak: "There are also pulleys and wheels." (new information, doesn't conclude about levers). Missing conclusion: explanation just stops after last example without any wrap-up sentence. Maya writes an explanation about Harriet Tubman. The body includes facts about her bravery in leading enslaved people to freedom. The explanation includes a concluding statement that summarizes her bravery and why it mattered. Choice C is correct because the conclusion summarizes her bravery and provides final thought about why her actions mattered, using transition words and connecting back to the topic. Choice B is incorrect because it thinks copying introduction word-for-word is ineffective when the actual conclusion synthesizes; students sometimes copy introduction exactly instead of synthesizing. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained three ways polar bears adapt to Arctic (thick fur, small ears, wide paws). Now I'll wrap up by restating: 'These special features help polar bears survive in extremely cold environments.' Final thought: 'Understanding these adaptations shows how animals change to fit where they live.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples; provide sentence frames: "Now you know that [main idea]. This [why it matters]." or "In conclusion, [summary of key points]. [Final thought]." Give feedback on common errors: "This conclusion is too brief. Add a sentence restating your main idea." or "This introduces new information. Instead, wrap up by summarizing what you already explained." Watch for: students who just stop after last detail without concluding; students who write "The end" or "Done" thinking it's sufficient; students who introduce completely new facts in conclusion instead of wrapping up. Common pitfall: students who copy introduction word-for-word; students who write vague conclusions ("That's all") that could apply to any topic; students who don't use transition words to signal conclusion; students who think longer conclusion is better even if it doesn't wrap up effectively; students who confuse adding more facts (body development) with wrapping up (conclusion).

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—“Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Example: If explanation is about how levers work (fulcrum, less force needed, examples), strong conclusion: "Now you can see how levers use a fulcrum to help us lift heavy objects more easily. This simple machine makes our work easier every day." (restates main idea + final thought). Weak conclusion: "Done." (too brief, no wrap-up). Weak: "There are also pulleys and wheels." (new information, doesn't conclude about levers). Missing conclusion: explanation just stops after last example without any wrap-up sentence. Marcus writes an explanation about exercising safely. The body includes facts about warming up, drinking water, and other safety tips. The explanation includes a concluding statement that restates why warming up and drinking water matter. The conclusion restates the main idea and provides a final thought. Choice B is correct because the concluding statement wraps up by restating why warming up and drinking water matter, connecting back to the topic. Choice A is incorrect because it thinks the conclusion should introduce new information when it should connect to what's already explained. Students sometimes think adding another fact is same as wrapping up. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained three ways polar bears adapt to Arctic (thick fur, small ears, wide paws). Now I'll wrap up by restating: 'These special features help polar bears survive in extremely cold environments.' Final thought: 'Understanding these adaptations shows how animals change to fit where they live.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples; provide sentence frames: "Now you know that [main idea]. This [why it matters]." or "In conclusion, [summary of key points]. [Final thought]." Give feedback on common errors: "This conclusion is too brief. Add a sentence restating your main idea." or "This introduces new information. Instead, wrap up by summarizing what you already explained.". Watch for: students who just stop after last detail without concluding; students who write "The end" or "Done" thinking it's sufficient; students who introduce completely new facts in conclusion instead of wrapping up. Common pitfall 2: students who copy introduction word-for-word; students who write vague conclusions ("That's all") that could apply to any topic; students who don't use transition words to signal conclusion; students who think longer conclusion is better even if it doesn't wrap up effectively; students who confuse adding more facts (body development) with wrapping up (conclusion).

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—"Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Emma writes an explanation about camels. The body includes details about their adaptations like humps for storing fat and long eyelashes for protection. The explanation ends abruptly after the last detail about sandstorms without any wrap-up. Choice A is correct because Emma does NOT include a concluding statement—the explanation ends after the detail about eyelashes and sandstorms without any wrap-up, leaving the reader without closure. Emma should add a concluding statement that restates the main idea or summarizes key points to wrap up, such as "In conclusion, these special features help camels survive in harsh desert conditions." Choice B is incorrect because it confuses introduction (which introduces topic) with conclusion (which wraps up). The first sentence introduces the topic but doesn't conclude anything. Choice C incorrectly thinks the last detail about sandstorms is the same as a conclusion, when it's just another fact without any wrap-up language. Choice D misunderstands that conclusions should connect to what's already explained, not introduce new facts about where camels live. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained how camels adapt to deserts (humps, eyelashes). Now I'll wrap up by restating: 'These adaptations help camels thrive in desert environments.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense; post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see. Use "conclusion checklist": Does it restate main idea? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples. Watch for: students who just stop after last detail without concluding; students who think any last sentence counts as conclusion; students who confuse adding more facts with wrapping up.

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—“Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Example: If explanation is about how levers work (fulcrum, less force needed, examples), strong conclusion: "Now you can see how levers use a fulcrum to help us lift heavy objects more easily. This simple machine makes our work easier every day." (restates main idea + final thought). Weak conclusion: "Done." (too brief, no wrap-up). Weak: "There are also pulleys and wheels." (new information, doesn't conclude about levers). Missing conclusion: explanation just stops after last example without any wrap-up sentence. Amir writes an explanation about plant growth. The body includes facts about seeds, water, sunlight, and time needed for plants to grow. The explanation needs a strong concluding statement to wrap up. Choice B is correct because "In the end, seeds, water, sunlight, and time help plants grow into adults" summarizes the key points and uses a transition word, connecting back to the topic. Choice C is incorrect because it accepts "Done" as an effective conclusion when it's too brief and doesn't restate or summarize anything. Students sometimes write "The end" or "Done" thinking it's sufficient. To help students write effective conclusions for informational/explanatory writing: Teach conclusion formula explicitly: "Restate + So What" or "Summary + Final Thought"; model with think-aloud: "I explained three ways polar bears adapt to Arctic (thick fur, small ears, wide paws). Now I'll wrap up by restating: 'These special features help polar bears survive in extremely cold environments.' Final thought: 'Understanding these adaptations shows how animals change to fit where they live.'" Show difference between introduction (This explanation is about...) and conclusion (Now you know that...); practice "Turn your introduction into a conclusion" by changing from future to past tense (will explain → explained/shows); post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Use "conclusion checklist": Does it restate main idea (not word-for-word)? Does it summarize key points? Does it provide final thought? Does it use transition word? Does it connect to topic? Does it avoid introducing major new information? Practice identifying strong vs weak conclusions with examples; provide sentence frames: "Now you know that [main idea]. This [why it matters]." or "In conclusion, [summary of key points]. [Final thought]." Give feedback on common errors: "This conclusion is too brief. Add a sentence restating your main idea." or "This introduces new information. Instead, wrap up by summarizing what you already explained.". Watch for: students who just stop after last detail without concluding; students who write "The end" or "Done" thinking it's sufficient; students who introduce completely new facts in conclusion instead of wrapping up. Common pitfall 2: students who copy introduction word-for-word; students who write vague conclusions ("That's all") that could apply to any topic; students who don't use transition words to signal conclusion; students who think longer conclusion is better even if it doesn't wrap up effectively; students who confuse adding more facts (body development) with wrapping up (conclusion).

This question tests 4th grade informational/explanatory writing skills: providing a concluding statement or section related to information or explanation presented (CCSS.W.4.2.e). Informational and explanatory writing needs a CONCLUDING STATEMENT that wraps up the explanation. An effective conclusion does one or more of these: restates the main idea (not word-for-word, but synthesized—"Now you know that...", "As you can see..."), summarizes the key points briefly, provides a final thought about why the topic matters or what the reader should remember, and uses conclusion transition words (In conclusion, Finally, To sum up, Now you know, Therefore). The conclusion connects back to what was explained and gives the reader a sense of completion—it does NOT introduce major new information not mentioned in the body, and it's NOT just "The end" or "Done." Marcus writes an explanation about plant growth. The body includes what plants need to grow (water, sunlight, soil). The question asks which concluding statement would work best. Choice B is correct because "In conclusion, plants need water, sunlight, and soil to grow strong" uses a transition word "In conclusion" and restates the main idea about what plants need, summarizing the key points explained in the body. This wraps up the explanation effectively. Choice A is incorrect because "Done" is too brief and doesn't restate or summarize anything about plant growth. It provides no closure or connection to the topic explained. To help students write effective conclusions for informational/explanatory writing: Post conclusion transition words: In conclusion, Finally, To sum up, Now you know, As you can see, Therefore, This shows that, In the end. Compare weak vs. strong conclusions side-by-side: "Done" vs. "In conclusion, plants need water, sunlight, and soil to grow strong." Have students practice transforming weak conclusions into strong ones. Watch for: students who write "The end" or "Done" thinking it's sufficient (Choice A); students who introduce new information not explained (Choice C adds plants being green and tall); students who write personal comments rather than wrapping up content (Choice D); students who effectively use transitions and restate main ideas (Choice B).