Question

part of the nervous system that consists of the brain and spinal cord
central nervous system (cns)
autonomous nervous system (ans)
peripheral nervous system (pns)
parasympathetic nervous system
sympathetic nervous system

Explanation:

The central nervous system (CNS) is composed of the brain and spinal cord. The autonomous nervous system (ANS) controls involuntary functions. The peripheral nervous system (PNS) consists of nerves outside the CNS. The parasympathetic and sympathetic nervous systems are parts of the ANS that regulate different involuntary responses.

Answer:

A. central nervous system (CNS)