Answer: Central nervous system.
- A Peripheral nervous system
- B Central nervous system
- C Autonomic nervous system
- D Somatic nervous system
Correct answer: B. Central nervous system
Explanation: The central nervous system (CNS) consists of the brain and spinal cord. Everything outside is the peripheral nervous system (PNS).
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.