Through which type of nerves does the brain send messages to the skeletal muscles in the legs when you are walking

A)  central 
B)  afferent 
C)  efferent 
D)  sensory

Efferent

Referring to nerve fibers that carry impulses away from the central nervous system to effectors (such as muscles or glands).

Afferent

Relating to or denoting nerve fibers that carry sensory information toward the central nervous system.

Central

Being at the most important or core position; of primary importance or relevance.