The correct answer to this open question is the following.
Although there are no options included, we can say the following.
When Juan was informed of a pop quiz in class, his heart rate, breathing, and blood pressure all increased. This response was as a result of the adrenal stress response controlled by the hypothalamus.
When we as humans are faced with a stressful situation, the human body starts a series of reactions that help us to be in a preventive mode. Commonly, the human body triggers a series of stress hormones that modify our psychological situation. Of course, part of this reaction includes an increase in the heart rate, the tense of the muscles, and the quickening of our breath.
