I may be wrong, but I think it's Antibodies.
Because it negatively effects there participation
Metabolism is the process by which your body converts what you eat and drink into energy. During this complex biochemical process, calories in food and beverages are combined with oxygen to release the energy your body needs to function so i would say that it is A but i could be wrong so good luck
Answer:
i think it would be ther first one, idk for sure becasue i have never took this class but from what i do know the first one seems themost reasonable. sorry if i am wrong
Explanation: