Answer:
The correct answer is the alarm reaction.
Explanation:
The alarm reaction or stage is the initial stage of the body's response to a stressful situation or stimuli, due to acquired physiological changes, such as high heart rate and increase in hormones activity.
In simple words, it is a reaction that body adapts in tough or fight or flight situation by pumping blood from the heart to arms and legs to fight or flight.
Thus, the correct answer is alarm reaction.