Question

1. when a person runs, he regulates how fast his legs move. which part of the nervous system controls this movement?

autonomic
somatic
sympathetic
parasympathetic

Explanation:

The somatic nervous system controls voluntary movements. Running and regulating leg - movement speed is a voluntary action. The autonomic nervous system controls involuntary functions. The sympathetic and parasympathetic nervous systems are parts of the autonomic nervous system and deal with involuntary processes like heart rate and digestion, not voluntary muscle movement.

Answer:

B. somatic