Which of the following is not a role of the basal nuclei? initiating protective reflex actionsinhibiting unnecessary or antagonistic movementsregulating attention and cognitioncontrolling starting and stopping movements

Initiating protective reflex actions is not a role of the basal nuclei

Explanation:

A reflex is the "simplest response" to Stimulus. The two examples of reflex are sneezing and blinking. The main role of reflex is to produces a quick motor response. Reflexes are "very fast" and most of reflexes not reach the brain. Reflex can be understood as blinking of eyes from any danger.

The main role of sensory neuron is to carry impulse from receptors to the spinal cord and motor neuron carry impulses from the spinal cord to the effectors.