4th Grade ELA Quiz: Authors Use Of Reasons And Evidence

What this quiz covers

This quiz focuses on Authors Use Of Reasons And Evidence, giving you a quick way to practice the rules, question types, and explanations that matter most for 4th Grade ELA.

How to use this quiz

Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

Question 1

1. Students who worked in the garden ate more vegetables at lunch.
2. Gardens give hands-on science lessons. (correct answer)
3. Students learn about soil, bugs, and plants by watching them grow.
4. At one school, students who worked in the garden ate more vegetables.

Explanation: "Gardens give hands-on science lessons" is a general reason given to support the claim, while the other statements give specific facts or observations that count as evidence. Choice A is wrong because it gives a specific result, which is evidence. Choice C is wrong because it describes specific things students observed, which is also evidence. Choice D is wrong because it restates a specific detail about one school, which is evidence, not a general reason.

Question 2

1. Libraries have existed in many towns for a very long time.
2. Libraries let people borrow books for free. (correct answer)
3. Libraries offer homework help for kids after school.
4. Libraries bring neighbors together at fun events.

Explanation: The author states that libraries are important because people can borrow books for free, which is the main reason given. Choice A is wrong because how long libraries have existed is never mentioned. Choices C and D describe real things libraries do, but they are examples that support the main reason, not the reason itself.

Question 3

1. The author says studies show kids who exercise often do better in school.
2. The author says exercise makes bones and muscles strong, helping kids stay healthy. (correct answer)
3. The author says exercise improves mood, which has nothing to do with schoolwork.
4. The author says all kids already get enough exercise every day.

Explanation: The correct answer states one of the author's actual reasons: exercise makes bones and muscles strong. Choice A is wrong because the school-performance detail is evidence supporting the reasons, not a reason on its own. Choice C is wrong because the passage says exercise helps kids focus, which does relate to schoolwork. Choice D is wrong because the passage never claims kids already exercise enough.

Question 4

1. "Libraries help kids learn to read" because it repeats the main claim.
2. "Had 200 fun days for families" to show libraries teach through organized activities. (correct answer)
3. "Quiet spots to read" to show libraries help people focus while reading.
4. "Get books that talk" to show tutoring is not needed at libraries.

Explanation: The detail about holding 200 fun family days shows a specific way libraries teach through organized activities. Answer A is wrong because it just restates the main claim instead of giving specific evidence. Answer C is wrong because a quiet reading spot supports reading, not organized programs. Answer D is wrong because audiobooks do not relate to whether tutoring is needed.

Question 5

1. Uniforms help students feel like they belong to a group.
2. A study found fewer problems in schools with uniforms. (correct answer)
3. Wearing the same clothes to school can help students learn.
4. Uniforms can save families a lot of money too.

Explanation: The best answer points to a study that found fewer problems in schools with uniforms. A study is real evidence, and it is tied to the exact claim about problems in schools. The sentence about students feeling like they belong to a group names a different benefit, not fewer problems, so it does not support this claim. The sentence about wearing the same clothes helping students learn is itself a claim, not evidence that backs one up. The sentence about saving families money is a separate reason about cost, not about problems in school. Only the study gives proof for the claim you were asked about.

Question 6

1. To give an example showing how plastic can harm ocean animals. (correct answer)
2. To give an example showing how quickly plastic breaks down in water.
3. To give a reason why using less plastic will cost people money.
4. To give an example of the tastiest foods that ocean turtles enjoy.

Explanation: The author brings up sea turtles eating plastic bags as a real example of the harm plastic causes ocean animals, which supports the idea that we should use less plastic. The choice about plastic breaking down quickly is wrong because the passage says the opposite—plastic lasts a long time and can take many years to break down. The choice about plastic costing people money is wrong because the passage never mentions cost at all. The choice about turtles' tastiest foods is wrong because the turtles are not choosing a favorite food; they are being tricked into eating plastic they mistake for jellyfish. Only the first choice explains the author's real purpose for this detail.

Question 7

1. The author supports it with a doctors' recommendation and study results. (correct answer)
2. The author supports it by predicting how kids will feel about it in the future.
3. The author supports it by comparing exercise to eating healthy foods.
4. The author supports it by listing sports that kids might enjoy playing.

Explanation: The best answer is that the author uses a doctors' recommendation and study results. The passage says doctors recommend 60 minutes a day, and it points to studies showing active kids fall asleep faster. Those are real facts the author uses as support. The choice about predicting how kids will feel in the future is wrong because the author gives facts about health and sleep, not guesses about the future. The choice about comparing exercise to eating healthy foods is wrong because the passage never mentions food or makes that comparison. The choice about listing sports kids might enjoy is wrong because the author names benefits of exercise, like strong bones and less stress, but never lists any sports to play.

Question 8

1. We should use less single-use plastic, since this is the author's opinion.
2. Plastic can also harm animals, since this explains why plastic is bad.
3. About 8 million tons of plastic enter the oceans every year, since this shows the amount rising. (correct answer)
4. Plastic takes a long time to break down, since this describes a different reason.

Explanation: The best answer is that about 8 million tons of plastic enter the oceans every year. This is a specific fact, and the passage uses it right after saying pollution is going up every year, so it backs up the idea that plastic pollution is increasing. The choice about using less single-use plastic is the author's overall opinion, not a fact that proves pollution is rising. The choice about plastic harming animals is a true detail, but it supports a different reason about why plastic is bad, not the idea that pollution is increasing. The choice about plastic taking a long time to break down is also true, but it points to a separate reason and says nothing about pollution going up. Only the amount that enters the oceans each year gives evidence about how much plastic there is.

Question 9

1. Recycling protects natural resources that people would otherwise use up. (correct answer)
2. Recycling saves energy because making a new can takes extra work.
3. Recycling is worth doing because most people enjoy sorting their trash.
4. Recycling helps families finish their chores in only a few minutes.

Explanation: The author brings up saved trees as an example of how recycling keeps us from using up things we need, so the best answer is that recycling protects natural resources people would otherwise use up. The choice about saving energy is a true idea from the passage, but it comes from the detail about cans, not the detail about trees, so it does not answer why the tree detail is there. The choice about people enjoying sorting trash is wrong because the passage never says people enjoy recycling. The choice about finishing chores quickly mixes up the detail about sorting taking a few minutes with the tree detail, which is about saving resources, not saving time. Only one choice explains why the author mentions trees.

Question 10

1. Libraries give out free books to people who want something to read.
2. One library held 200 free lessons last year, such as reading and art groups. (correct answer)
3. Libraries give people a safe and welcoming place where they can meet.
4. Many libraries lend out e-books and offer free computers for doing homework.

Explanation: The author says libraries offer classes for kids, so you need a detail about those classes. The answer about one library holding 200 free lessons, such as reading and art groups, is that evidence — it names the kinds of classes kids can take. Giving out free books is a real library service, but it is a different reason and says nothing about classes. Offering a safe place to meet is also a separate reason about gathering, not learning classes. Lending e-books and free computers supports a point about access to tools, not about classes for kids. Only the detail about the free lessons directly backs up the reason in the stem.

Question 11

1. Recycling helps almost 100 percent of the whole world stay clean.
2. Recycling saves a big amount of useful energy every single day.
3. Recycling cans saves about 95% of the energy needed to make new cans. (correct answer)
4. Recycling can lower pollution in over 50 different towns nearby.

Explanation: A fact or statistic uses an exact, checkable number that the passage actually states. The answer about cans saving about 95% of the energy is correct because that number really comes from the passage as evidence for the writer's claim. The choice about keeping the world clean is an opinion, and its 'almost 100 percent' is invented, not a real fact from the passage. The choice about saving a big amount of energy sounds strong, but 'a big amount' is not an exact number, so it is a general reason, not a statistic. The choice about lowering pollution in over 50 towns names a number, but the passage never says how many towns, so that number is made up and not real evidence. Only one choice gives a real, exact number that the passage backs up.

Question 12

1. Getting sixty minutes of activity is recommended for children every single day.
2. Studies show that kids who exercise regularly often do better in school. (correct answer)
3. Activities like dancing and biking count as real exercise for kids too.
4. Stronger bones and muscles from exercise help kids with sports and play.

Explanation: The correct answer is the one about studies showing kids who exercise do better in school. This directly backs up the idea that exercise improves mood and sleep so students feel ready to learn — better school performance is the result of that readiness. The choice about sixty minutes a day gives a recommended amount of exercise, not proof about mood, sleep, or being ready to learn. The choice about dancing and biking only names types of exercise, so it does not show any effect on mood or sleep. The choice about stronger bones and muscles supports a different reason in the passage — that exercise helps with sports and play — not the mood-and-sleep reason the question asks about. Only one answer connects exercise to feeling ready to learn, which is the evidence for improved mood and sleep.

Question 13

1. Recycling is a good way to help the earth every day.
2. Sorting paper and cans for recycling takes only a few minutes.
3. Recycling paper can protect trees and the woods they grow in. (correct answer)
4. Recycling keeps a lot of extra trash out of the dumps.

Explanation: The idea being supported is that recycling saves resources. Saying that recycling paper protects trees points to a real resource being saved, so it is the evidence that backs up the claim. Saying recycling is a good way to help the earth just repeats the main idea in a general way; it does not show which resource is saved. Saying that sorting takes only a few minutes tells you recycling is quick and easy, but time is not a resource, so it is not evidence for this claim. Saying recycling keeps trash out of the dumps names a different benefit—less trash—not the saving of a resource like trees or energy. Only one choice names a resource that recycling actually saves.

Question 14

1. To give evidence that gardens can encourage students to eat healthier foods. (correct answer)
2. To give evidence that gardening can help students do better on their science tests.
3. To show that getting free seeds is a good way for schools to pay for gardens.
4. To explain that kids can learn where their food comes from by working in gardens.

Explanation: The author brings up the Lincoln school students right after saying gardens help kids pick healthy foods, so this detail is real evidence that working in a garden can lead students to eat more vegetables. The choice about better science test scores connects to a different part of the passage, not to eating vegetables. The choice about free seeds matches the passage's point about cost, but that detail is about money, not about the Lincoln students' eating. The choice about learning where food comes from is another true idea in the passage, but the Lincoln detail is about what kids ate, not about where food comes from. Only the healthy-eating choice explains why the author included this exact detail.

Question 15

1. Using bottles you can reuse is one simple way people can help the oceans.
2. Plastic hurts ocean life, which is one big problem it can cause each year.
3. About 8 million tons of plastic go into the oceans every year. (correct answer)
4. Plastic does not break down fast, so some pieces last for many years.

Explanation: The reason is that plastic pollution is increasing. The detail about 8 million tons going into the oceans every year gives a fact showing how much plastic keeps piling up, so it best supports that reason. The choice about reusing bottles names a way to help the problem, not proof that pollution is growing. The choice about plastic hurting ocean life describes a different problem plastic causes, not how the amount is increasing. The choice about plastic not breaking down fast supports a different reason, that plastic stays in the water a long time. Only the amount going in each year shows the pollution rising, so it is the best answer.

Question 16

1. "We should reduce single-use plastic" to state the author's main point about pollution.
2. "Sea turtles mistake plastic bags for jellyfish" to show that animals can be hurt. (correct answer)
3. "Plastic lasts a long time" to show that trash on beaches never really disappears.
4. "8 million tons enter oceans each year" to show how much plastic ends up polluting water.

Explanation: The detail that sea turtles mistake plastic bags for jellyfish is the best answer because it directly shows plastic hurting a marine animal, which is exactly the reason the question asks about. The choice about reducing single-use plastic is the author's opinion, not evidence, so it does not prove animals are harmed. The choice about plastic lasting a long time supports a different reason—that plastic does not break down—not that it harms animals. The choice about 8 million tons entering the ocean tells you how much plastic there is, but it measures the amount of pollution, not the harm to living creatures. Only the turtle detail actually describes an animal being hurt.

Question 17

1. One town that recycles filled its trash cans slowly last year.
2. Recycling helps the earth by cutting down on trash and pollution. (correct answer)
3. Saving paper can also save trees.
4. Recycling started in this town two years ago.

Explanation: The correct answer states a general reason to recycle, while the other choices give specific examples or facts. Choice A is wrong because it describes one neighborhood's specific experience, which is an example, not a reason. Choice C is wrong because it is a specific fact from a report, which counts as evidence. Choice D is wrong because it is a background detail that does not explain why recycling helps.

Question 18

1. Doctors say that exercise helps kids fall asleep faster at night.
2. Studies show active students pay attention more easily in class.
3. Studies show exercise helps kids' hearts and muscles grow strong. (correct answer)
4. Teachers say exercise is a fun way for kids to move around together.

Explanation: The best answer says exercise helps kids' hearts and muscles grow strong. This is a science-based reason that links exercise directly to healthy bodies, which is the strongest support for the idea that exercise is truly essential. The choice about falling asleep faster names a real benefit from the passage, but sleep is a smaller help, not the strongest reason exercise is essential. The choice about paying attention in class is also a real benefit, but doing better in school does not show that exercise is essential for a kid's body as directly. The choice about exercise being a fun way to move around is an opinion about fun, not a fact showing exercise is necessary. Only the answer about hearts and muscles growing strong gives the powerful, health-based reason the claim needs.

Question 19

1. The author gives examples like free computers and classes people can use. (correct answer)
2. The author lists the many rules people must follow inside a library.
3. The author tells a long story about one kid who visited a library.
4. The author compares libraries to schools that people must pay to attend.

Explanation: The author gives real examples, such as free computers and classes for kids and adults, to show how libraries help people learn. These specific details are the evidence that backs up the main point. The choice about library rules is wrong because the passage never mentions rules, so that is not how the author makes the point. The choice about a long story about one kid is wrong because the author does not tell any story at all; the passage only lists helpful things libraries offer. The choice about comparing libraries to schools people must pay for is wrong because the author actually says libraries are free and never makes that comparison. Only the examples of free computers and classes truly support the point.