Answer:
The correct answer is option C, Your muscles are paralyzed so you can't act out your dreams.
Step-by-step explanation:
REM stands for Rapid Eye Movement sleep. This is the phase of the sleep that occurs in mammals and birds. In this type of sleep, rapid eye movement occur with low muscle tone throughout the body and the tendency of the dream increases vibrantly during the sleep. The muscles of the body get paralyzed and the person is unable to do anything in the dream. The pulse and the breathing of the dreaming person increases. REM usually happens to old people but it is not limited to them only.