ISEE Reading Question 526: Answer and Explanation
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Question: 526
4. The author suggests that most large-scale migration occurs at night primarily because
- A. there are few predators at night.
- B. birds can fly faster at night.
- C. birds are better able to take advantage of seasonal wind patterns at night.
- D. birds have good night vision.
Correct Answer: A
Explanation:
A is correct. The first sentence of the third paragraph lists two reasons why most large-scale migration occurs at night: "the air is cool and calm and there are few predators." Choice B is incorrect because the passage never mentions whether birds fly faster by day or by night. Choice C is incorrect because the passage states just the opposite. Choices D may be correct, but neither one is specifically cited in the passage as being a reason for migration to take place at night.