Answer: C. fight-or-flight
Explanation:
The fight or flight response is a physiological reaction that occurs due to response one perceives due to harmful event, threat to survival and attack. During the fight or flight reaction the hormones like cortisol and adrenaline are released by the brain. This is responsible for increasing the heart rate, dilation of the pupil, excessive sweating, slowing the digestion process, shunting the blood flow towards the muscle groups and this also involves the change in the autonomic nervous functions that causes a increase in energy and strength.
According to the description above Jade is suffering from fight or flight response due to the threat of rattlesnake.