Answer:
The correct answer would be C. Involuntary responses are part of the autonomic system.
The autonomic nervous system (ANS) is sub-division of the peripheral nervous system (PNS) mainly associated with involuntary responses.
It regulates the psychological actions such as heart rate, respiratory rates, digestion, urination, sexual arousal, pupillary responses, thermoregulation, fight and flight responses et cetera.
