After entering stage 4 for the first time each evening,the sleeper typically ____.
A)returns immediately to stage 1
B)enters REM
C)cycles back through stages 3 and 2
D)wakes up

Question

After entering stage 4 for the first time each evening,the sleeper typically ____.​
A)returns immediately to stage 1
B)​enters REM
C)​cycles back through stages 3 and 2
D)wakes up

Quizplus · Accepted Answer

After entering stage 4 for the first time each evening, the sleeper cycles back through stages 3 and 2. This cycle is repeated throughout the night, with less time spent in deep sleep (stages 3 and 4) and more time spent in REM sleep as the night progresses.

After Entering Stage 4 for the First Time Each Evening,the