Answer:
The correct answer would be D. to process information and form a response.
Central nervous system (CNS) is a part of nervous system that includes brain and spinal cord.
The brain is main controlling and processing unit of the body. The brain has four lobes (temporal, occipital, Parietal, and frontal lobe) in which different stimuli are processed and responses are generated.
The spinal cord acts as a connecting link between the brain and the rest of the body with the help of peripheral nervous system.
Together, brain and spinal cord process information and control all the voluntary and involuntary movements of the body.