Answer:
The answer is letter A, self-report scales.
Step-by-step explanation:
Stress is considered a person's reaction when something demanding arises. This tension affects the person physically and emotionally.
It is said that the most common approach taken by most health psychologists in measuring the level of stress is "self-report scales." In this approach, the psychologist asks the participants about his/her feelings through a set of questionnaires (without an outside/external interference). It highly correlates the causes of stress and the best way to deal with it in the future.
The answers to the queries will be analyzed by the psychologist and will tell the person's level of stress.
Thus, this explains the answer.