The reason that REM sleep occurs is:
A) to allow the mind to solve the day's problems during sleep.
B) to allow memories to form.
C) to release tensions from the previous day.
D) unknown.

Question

Quizplus · Accepted Answer

The exact reason why REM sleep occurs is still not fully understood, making "unknown" the most accurate answer. While there are theories suggesting REM sleep plays a role in memory consolidation, problem-solving, and tension release, the definitive purpose of REM sleep remains a subject of ongoing research.

The Reason That REM Sleep Occurs Is