One Likely Explanation for Why People Often Dream of an Inability

Multiple Choice

One likely explanation for why people often dream of an inability to move is that

A) they have unusually vigorous eye movements during such dreams.
B) high amounts of activity occur in the occipital lobe of the cerebral cortex during such dreams.
C) sexual arousal is most likely during such dreams.
D) it really is difficult to move the muscles during REM sleep.