What Is a Characteristic of REM Sleep

Multiple Choice

What is a characteristic of REM sleep?

A) During the REM stage, delta waves are emitted.
B) Most people spend almost all of their sleep time in the REM stage.
C) The preoptic area of the hypothalamus stimulates REM sleep.
D) During REM sleep, blood flow to the frontal lobe increases.
E) Brain waves change to a desynchronized pattern during REM sleep.