Answer:
Exercise physiology.
Explanation:
Is the physiology of physical exercise.
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
Herpes, HIV and HPV all don't have cures
Well, Assuming that this is the same multiple choice question that I have answered, I would say B. Chromosomal Disease.
The answer to this is True.