Keith is hiking in the mountains. keith hears a rattle. When he turns around he sees a rattlesnake inches from his leg. His pupils dilate, his heart pounds, and he begins to sweat. This response is called the response.

fight-or-flight

Explanation:

Keith is hiking in the mountains. keith hears a rattle. When he turns around he sees a rattlesnake inches from his leg. His pupils dilate, his heart pounds, and he begins to sweat. This response is called the fight-or-flight response.  Fight-or-flight response is stress response in the face of danger or harm, it involves a series of physiological responses aimed at managing the situation. It is coordinated by the sympathetic nervous system via the adrenal gland which secretes hormones to manage the responses to such danger or harm.

answer; can each be concretely realized in different ways;