Question

sleeping is divided into which two broad categories? multiple choice n4 and nrem n1 and rem rem and nrem n1 and n4

Explanation:

Sleep is categorized into Rapid - Eye - Movement (REM) and Non - Rapid - Eye - Movement (NREM) sleep. NREM has stages N1 - N4. So the two broad categories are REM and NREM.

Answer:

C. REM and NREM