Question

the brain and spinal cord make up the ______ nervous system.
peripheral
central
main
lower

Explanation:

In the nervous system, the central nervous system (CNS) is composed of the brain and the spinal cord. The peripheral nervous system consists of nerves outside the CNS. "Main" and "lower" are not standard terms for this division. So the correct term is "central".

Answer:

B. central (assuming the options are labeled as A. peripheral, B. central, C. main, D. lower)