What does the brain appear to do during sleep, according to the passage?
Researchers have long observed that people who sleep after studying remember more than people who stay awake for the same period. During sleep, the brain appears to replay recent experiences and strengthen important connections. In one experiment, students who learned a list of words in the evening and then slept performed better the next morning than students who learned the list in the morning and were tested in the evening. The scientists cautioned that the result does not mean that long sleep alone guarantees good grades.
Answer and explanation
Correct answer: A. Replay events and strengthen links
- Step 1: The passage says the brain appears to replay recent experiences and strengthen important connections.
- Step 2: This helps memory.
Answer
Replay events and strengthen links.
Why not the others: The passage does not say the brain stops, forgets only or prepares questions.
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