Answer:
b) approaching the attractive woman; Desmond's racing heart
Step-by-step explanation:
Stress is a coping mechanism that prepares the body for a challenging situation, is defined as the physical, mental or emotional response to an external stimulus, a biological or chemical agent or an event known as the stressor. In the given example approaching the woman is the situation Desmon considers as the challenge, therefore this is the stressor. The response to this stressor is his heart starts racing and his pupils dilate, this is the stress.
I hope you find this information useful and interesting! Good luck!