D. Coordinates voluntary movements such as running.
In the human brain, the cerebrum is the uppermost region of the central nervous system. The cerebrum consists of the cerebral hemispheres and accounts for two-thirds of the total weight of the brain. It is responsible for the integration of complex sensory and neural functions and the initiation and coordination of voluntary activity in the body.
Because even if he only had a jump rope or she didn't have anything. They could still do a personal fitness program by doing different exercises that don't include those things.
