Indicate Which Part of the Autonomic Nervous System Is Being

Short Answer

Indicate which part of the autonomic nervous system is being described by writing the appropriate letter in the blank using the following answer code.
a.sympathetic nervous system
b.parasympathetic nervous system
c.both sympathetic and parasympathetic nervous system
d.neither sympathetic nor parasympathetic nervous system
-Postganglionic fiber secretes norepinephrine