The peripheral nervous system (PNS) connects the CNS to:

The peripheral nervous system (PNS) plays a crucial role in connecting the central nervous system (CNS)—which comprises the brain and spinal cord—to the rest of the body. This includes sensory organs, limbs, and internal organs. By facilitating communication between the CNS and all parts of the body, the PNS allows for the transmission of sensory information to the brain and the relay of motor commands from the brain to the muscles.

This connectivity is essential for various bodily functions, including reflexes, voluntary movements, and the regulation of internal organ functions. The PNS is made up primarily of nerves and ganglia situated outside of the brain and spinal cord, which is unique compared to other options that limit the perspective of the PNS's role.

The other options are narrower in scope, either restricting the connectivity to only neurons or the spinal cord and brain, failing to recognize the extensive reach of the PNS throughout the entire body. This broader understanding is vital for grasping the full function and importance of the PNS in the nervous system.