A reflex

A) is an automatic, involuntary response.
B) does not require the central nervous system.
C) is normally controlled consciously.
D) has no protective value.
E) involves only sensory neurons.

Reflex

An automatic and rapid response to a stimulus without conscious thought.

Involuntary Response

Automatic bodily functions or reactions that are not under conscious control, such as reflex actions.

Sensory Neurons

Nerve cells that transmit sensory information (sight, sound, touch, smell, and taste) from the sensory organs to the brain.