Somatic motor neuron is:
a. a neuron that delivers an action potential from the central nervous system to a skeletal muscle
b. a location outside of the central nervous system where autonomic signals can synapse
c. a neuron that receives an action potential from another neuron and then delivers that action potential to a smooth muscle
d. a neuron that delivers an action potential from the central nervous system to another neuron in the peripheral nervous system

The answer is A.

A somatic neuron is the one that delivers an action potential from the CNS to a skeletal muscle.

Explanation:

The " Somatic Nervous System" in the one responsible for transmitting information from the CNS to all your body. This can control and respond to stimulants  in your muscles, skeleton, skin and your senses like sight and hearing.

For every action that you want to perform, maybe voluntarily or involuntary (reflexes) the Somatic Motor Neurons are involve to make the reaction possible.