Questions: The central nervous system consists of the motor neurons and sensory neurons autonomic and somatic nervous system brain and spinal cord parasympathetic and sympathetic nervous system

The answer is the third one: the brain and spinal cord.

Explanation for each option:

1. Motor neurons and sensory neurons: Incorrect. These are types of neurons that are part of the peripheral nervous system, not the central nervous system.
2. Autonomic and somatic nervous system: Incorrect. These are divisions of the peripheral nervous system.
3. Brain and spinal cord: Correct. The central nervous system (CNS) consists of the brain and spinal cord.
4. Parasympathetic and sympathetic nervous system: Incorrect. These are parts of the autonomic nervous system, which is a division of the peripheral nervous system.

Summary: The central nervous system consists of the brain and spinal cord.