Some People Customarily Sleep Only 1 to 3 Hours Per

Multiple Choice

Some people customarily sleep only 1 to 3 hours per night. Some have gone 10 days or more without sleep, apparently without suffering any medical harm. Observations such as these are considered evidence against the theory that

A) the 24-hour cycles of sleep and wakefulness are generated within the body itself.
B) the main purpose of sleep is to enable the body to repair and restore itself.
C) sleep consists of four separate stages, plus REM sleep.
D) dreams are the result of the brain's attempt to synthesize all the information that activates it.