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.
Answer:
doing exercises
Explanation:
these like running use much calories than normal
Over consumption of fats and oils because at a yooung age the health system reduces to the nutrition its provided and if a child can't stop eating sweets and cholestrol food that can cause obesity
Hope this helped
Substance abuse, also known as drug abuse, is a patterned use of a drug in which the user consumes the substance in amounts or with methods which are harmful to themselves or others, and is a form of substance-related disorder.