Final answer:
The parasympathetic nervous system is responsible for returning the body to homeostasis after a stressful event such as escaping from a bear. The correct option is b.
Step-by-step explanation:
After a successful escape from a bear, the division of the nervous system that would be most directly involved with returning to homeostasis is the parasympathetic nervous system (PNS).
During an encounter with a threat such as a bear, the sympathetic nervous system is activated, provoking a fight-or-flight response characterized by an accelerated heart rate and inhibited digestion.
However, once the threat has passed, it's the parasympathetic nervous system's role to calm the body down, slow the heart rate, stimulate digestion, and essentially bring the body back into a state of balance or homeostasis. This action of the PNS is often referred to as 'rest and digest.' The correct option is b.