Which statement is true of sleep?

Question

Quizplus · Accepted Answer

In a normal night, one passes through all stages of sleep, including REM, several times. It is not true that most of the night is spent in the deepest level of sleep (stage 4) (A). It is not accurate that one spends an hour or two at each stage in turn, spending the last few hours at stage 4 and then at REM (B). Additionally, it is not true that one goes through stages 1, 2, 3, and 4, in order, then alternates randomly between stages 1, 2, and 3 (D).

Which Statement Is True of Sleep