Question

identify the nervous system responsible for calming the body and conserving energy.

Explanation:

The autonomic nervous system has two divisions: the sympathetic (arousing) and the parasympathetic. The parasympathetic nervous system is responsible for "rest - and - digest" functions, which include calming the body and conserving energy (like slowing heart rate, aiding digestion, etc.).

Answer:

Parasympathetic nervous system