What are the characteristics of the central nervous system? Select all that apply.

The central nervous system (CNS) consists of the brain and spinal cord, so A is correct. The spinal cord also carries messages between the brain and the peripheral nervous system (PNS), making C correct. A system of bones is the skeletal system, not the CNS, and nerve plexuses are networks in the peripheral nervous system.

AI-written and checked against the verified answer.