Which part of the nervous system is responsible for controlling reflexes?

The correct answer is the central nervous system.

Reflexes are rapid and automatic responses to certain stimuli that do not require conscious thought. They are controlled by a reflex arc, which is a neural circuit that allows sensory information to be processed in the spinal cord without needing to go to the brain.

The central nervous system (CNS) consists of the brain and spinal cord, and is responsible for receiving, processing, and responding to all sensory information. When a reflex is triggered, the sensory neurons send signals to the spinal cord which then sends a signal directly to motor neurons, resulting in a quick and automatic response.