Which of the Following Statements Is True of REM Sleep

Multiple Choice

Which of the following statements is true of REM sleep?

A) REM sleep is an inactive stage of sleep during which high levels of cortisol are present in the body.
B) The longer the period of REM sleep,the more likely the person will report dreaming.
C) REM sleep occurs whenever the levels of melatonin in the body fall below a certain point which differs from individual to individual.
D) The internal body temperature of humans is highest during REM sleep.