Sleeping by Herself, LaShawn Was Gently Drifting Off to Sleep

Multiple Choice

Sleeping by herself, LaShawn was gently drifting off to sleep when she was jolted awake by the vivid sensation that someone had just touched her arm. After sitting up and reassuring herself that no one was in the room, she lay back down and tried to put the experience out of her mind. LaShawn experienced _____, which is most likely to occur _____.

A) a night terror or sleep terror; in stage 4 NREM sleep
B) a K complex; during Stage 2 NREM sleep
C) a hypnagogic hallucination; as a person is first going to sleep
D) REM rebound; during REM sleep