Mammals Experience Two Distinct Types of Sleep

Multiple Choice

Mammals experience two distinct types of sleep.A sleeping dog that starts to make noises and appears to be trying to chase something while remaining asleep is likely transitioning from _______ to _______.

A) wakefulness; slow-wave sleep
B) REM sleep; wakefulness
C) slow-wave sleep; high-amplitude sleep
D) REM sleep; slow-wave sleep
E) slow-wave sleep; REM sleep