Many students believe that studying late into the night is the best way to prepare for an exam. Scientists have found the opposite. During sleep the brain organizes what we learned during the day and stores it as memory. Rested students are alert in class and can concentrate for longer. They also make fewer mistakes when they solve problems. A good night's sleep is not a luxury but a tool. Most teenagers need between eight and ten hours each night.

Answer and explanation

Correct answer: A. A student who sleeps well may learn more than one who studies late

  1. Step 1: The passage compares tired and rested students. Step 2. Rested students are said to remember more. Answer: A student who sleeps well may learn more than one who studies late. Why not the others: the others contradict the passage.

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