I believe that the answer to this question is D values and desires
I beleive it is A. the others sound like they're too much
<span>An athlete does not necessarily NEED supplements in their diet. While many athletes prefer to use supplements, one can succeed by eating healthy, making sure that proper nutrients are eaten, and topping off with a multivitamin. Proper carbohydrates, fats, and proteins are all very important.</span>
A. the respiratory system involves the lungs and airway, that is bringing the oxygen in and releasing the carbon dioxide
