Muscles directly cause
a. the release of hormones.
b. the regeneration of nerves.
c. the extension of limbs.
d. the healing of wounds.

The correct answer is letter B. the regeneration of nerves. Muscles directly cause the regeneration of nerves. Muscles are composed of bundles of tissue fiber, that because of being fibrous,, it has the ability to contact and even produce movement. It also maintains the location and position of our body parts.

They probably don't understand either 1. what the nightmare is about or 2. his anxiety and stress