20 points || during rem sleep, ==> a) the level of stress in the body rises b) the brain prepares for daytime performance c) eye movement slows down d) heart rate and blood pressure increase

B) the brain prepares for daytime performance.

Your heart rate actually slows down as you are resting and basically your body shuts down. Your eye movement usually occurs on your own actually or if something painful happened and your nerves. And your stress actually goes down because you normally don't think in your sleep or feel certain things.

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