I think it's A, but I'm not 100% sure
Macronutrients: a type of food (e.g. fat, protein, carbohydrate) required in large amounts in the diet.
There are three types of macronutrients. Carbohydrates, lipids, and proteins. This man mainly eats carbohydrates, which is problematic because while they are an amazing energy source, too much will continue to build up and be stored as fat without a proper exercise to get rid of the energy. One way to improve his diet would be to reduce his carbohydrates intake by half, and double his vegetable intake.
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.
About 5 minutes, to make sure you get all of it out
