The answer is C. You don't really need the others because they don't impact your physical health. If you think about it that way!!
The goldilocks concept states that you will experience a high peak of motivation when you slightly challenge yourself. The applies to your overall wellness, activity, and diet because when you eat food such as protein and fiber that is good for your body you will have the ability to become more active, which will lead to excellent health and a good sleep pattern which is a part of overall wellness.
Wait I’m confused, what’s the question?