Interneurons are most commonly located in which of the following? central nervous system sensory nerves sympathetic nervous system peripheral nervous system

The correct answer is the **central nervous system**.<br /><br />Interneurons, also known as relay neurons or association neurons, are primarily found within the brain and spinal cord, which together constitute the central nervous system. They connect sensory neurons and motor neurons, playing a crucial role in integrating and processing information within the CNS. While some interneurons might exist in autonomic ganglia (part of the peripheral nervous system), their primary and overwhelming presence is in the central nervous system.<br />