After a Very Loud Noise in Her Backyard Woke Her

Multiple Choice

After a very loud noise in her backyard woke her from a sound sleep, Ursula is lying in bed paralyzed by fear. Her heart is pounding, her face is flushed, and there is a sinking feeling in the pit of her stomach. The nervous system that is responsible for Ursula's body reactions to the noise is called _.

A) central nervous system
B) somatic nervous system
C) voluntary nervous system
D) autonomic nervous system