The answer should be A, as anorexia nervosa is when someone worries far too much about their weight and begin to eat far less, becoming severely underweight.
Answer: your answer is A. The quality of air and water at places where people live,work, and go to school.
Explanation: environment is a where people live together.
Being that my mother is a social worker and she goes to many facilities to give different resources, and is overall great with the community, naturally, I would say it is "Social Workers"