How does sleep change as a person ages, from infancy to old age?

A) The total amount of sleep decreases and the amount of REM sleep increases.
B) The total amount of sleep decreases and the amount of REM sleep decreases.
C) The total amount of sleep increases and the amount of REM sleep increases.
D) The total amount of sleep increases and the amount of REM sleep decreases.

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Joyce Marie Ortiz · Accepted Answer

Final Answer : B, Explanation :  As a person ages from infancy to old age, the total amount of sleep gradually decreases, with infants requiring up to 16-18 hours of sleep a day, while older adults may require only 5-6 hours. Additionally, the amount of REM sleep decreases, with infants spending up to 50% of their sleep in REM, while older adults spend only about 20%. Non-REM sleep also changes as a person ages, with less time spent in deep stages of sleep and more time spent in lighter stages.

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