While in a Deep Sleep, Bobby Sometimes Becomes Violent and Thrashes

Multiple Choice

While in a deep sleep, Bobby sometimes becomes violent and thrashes around. If someone is sleeping with him, he sometimes hits or elbows them. He even dented the wall next to his bed with his elbow. Bobby might have a condition known as __________

A) sleep apnea.
B) narcolepsy.
C) REM sleep behavior disorder.
D) sleep terrors.