Answer:
d) health psychologist.
Step-by-step explanation:
Health psychologist: In psychology, the term "health psychologist" is described as an individual who is being engaged in several different tasks associated with "health and wellness". However, a lot of health psychologists tends to work directly in a few clinical settings in order to help different groups or individuals to promote healthy behavior and prevent illness and a lot of health psychologists conduct researches on "health-related issues".
In the question above, Helen is likely a health psychologist.