What do interneurons primarily do?

Interneurons serve a crucial role within the central nervous system (CNS) by processing signals that allow for communication between sensory inputs and motor outputs. They act as intermediaries, integrating information from sensory neurons and relaying it to motor neurons or other interneurons. This processing allows interneurons to contribute to reflexes and complex neural circuits, facilitating the coordination of the body's responses to stimuli.

Their primary function is to ensure that information is processed efficiently and appropriately before being sent out as a response, such as muscle movement. Since they connect multiple signals from different origins, they play a vital part in reflex arcs and in the overall functioning of the nervous system. This central role in processing signals makes option B the correct choice.