Answer: I believe it is B i could be wrong tho
Work up more then a couple times a week every day but not Sunday for al long as you can and if you want to run base all of you extra time on leg work
The correct answer should be carbohydrates.
Carbohydrates are the main source of energy and without them the cells would have no energy at all, which is why they would start working based on reserves of fat, and if you didn't have that you would die of malnutrition.