What is the main point of the passage about sleep and examinations?
Read the passage: Sleep is often the first thing students sacrifice before examinations. They stay up late revising, believing that every extra hour of study will raise their marks. Research on memory suggests the opposite. During deep sleep, the brain sorts and stores what was learned during the day, turning fragile memories into lasting ones. A student who studies for six hours and sleeps for eight may therefore remember more than one who studies for ten and sleeps for four. Teachers and parents who want better results might do well to send students to bed rather than back to their books.
Correct answer C. Adequate sleep helps memory and can improve examination results
The passage explains that deep sleep helps the brain store learning and concludes that sending students to bed may improve results more than extra study.
Answer checked How we write and check questions
Discussion