In terms of the heartbeat, digestion, and glandular functioning, the body is a fairly well-oiled machine that works even when it is asleep. this is possible because of the nervous system. type the correct answer in the following input field, and then select the submit answer button or press the enter key when finished.

Autonomic nervous system

Explanation:

The autonomic nervous system of the body works by maintaining the normal functioning of the body even during the time of sleeping.

The autonomic nervous system is the part of nervous system that supplies the body internal organs, including the blood vessels, lungs, bladder and digestive glands.

This is possible because of the autonomic nervous system which works during the time of sleeping or involuntarily.

i believe the answer would be b. hope it : )