Final answer:
Stress appraisal refers to an individual's evaluation of a situation to determine if it is threatening or challenging.
Step-by-step explanation:
The likelihood that Peter will experience stress depends largely on his perception of an event or situation, which is also known as: The stress appraisal.
Stress appraisal refers to the individual's evaluation of a situation to determine whether it is threatening or challenging. This evaluation influences how a person reacts to the event and whether they perceive it as stressful. For example, if Peter perceives a job promotion as an opportunity for growth, he may experience less stress compared to someone who sees it as an overwhelming demand.