Answer:
negatively reinforced
Step-by-step explanation:
The automatic nervous system is the system of the human body that controls and regulates the functions of the body unconsciously. The response is provided by the body to either face or to move out of the situation. Usually, there arises a change in the frequency in the blood pressure, the process of digestion, metabolism, and other body processes.
As per the given excerpt, the automatic nervous system arousal of John is negatively reinforced. The action of John moving out of the crowded room reflects his action against anxiety. This highlights the action adopted to minimize anxiety and therefore is negatively reinforced.