Efraín is hiking along a path in the mountains when he comes around a corner and suddenly sees the path has eroded and there is a 30-foot drop in front of him. His heart begins to pound, his breathing speeds up, and his muscles get tense. What is this reaction called and where is it located in the nervous system?
a) Fight or flight response; located in the parasympathetic nervous system
b) Fight or flight response; located in the somatic nervous system
c) Stress response; located in the autonomic nervous system
d) Stress response; located in the sympathetic nervous system
