Final answer:
True, the parasympathetic nervous system aids in bringing the body back to homeostasis by managing rest and digest functions after the fight or flight response. option a is the correct answer.
Step-by-step explanation:
The statement that the parasympathetic nervous system aids in bringing the body back to homeostasis after a stressor is sensed is true.
The parasympathetic nervous system is essentially responsible for the 'rest and digest' activities in the body, counteracting the effects of the sympathetic nervous system, which is activated during stressful situations to prepare the body for 'fight or flight' responses.
After such a stressor is no longer present, the parasympathetic nervous system works to reset organ functions to their normal state, slow down the heartbeat, constrict air passages, and stimulate digestion, thereby maintaining internal homeostasis.