The portion of the nervous system that controls involuntary activities is a subdivision of the ____ nervous system.

A. sympathetic
B. central
C. peripheral
D. parasympathetic

I think it's either B or C right?

The autonomic nervous system (ANS) is part of the peripheral nervous system (PNS). It is divided into the sympathetic and parasympathetic systems.

Yes, you are on the right track. The portion of the nervous system that controls involuntary activities is a subdivision of the peripheral nervous system. Therefore, the correct answer is C. peripheral.

To arrive at this answer, let's break down the options:

A. The sympathetic nervous system is responsible for the "fight or flight" response, which is a function of the autonomic nervous system (a subdivision of the peripheral nervous system), but it is not specifically related to controlling involuntary activities.

B. The central nervous system consists of the brain and spinal cord, which control both voluntary and involuntary activities. However, the question asks for the subdivision of the nervous system, so the answer is not B.

C. The peripheral nervous system includes all nerves and ganglia outside of the brain and spinal cord. It consists of the somatic nervous system (controlling voluntary activities) and the autonomic nervous system (controlling involuntary activities). As the question specifically asks about the subdivision that controls involuntary activities, C. peripheral is the correct answer.

D. The parasympathetic nervous system is a division of the autonomic nervous system, which controls functions like digestion and rest. However, it is not the general subdivision that controls involuntary activities.

Therefore, the correct answer is C. peripheral.