A person can achieve optimum daily nutrition by

A. eating large amounts of lean protein.

B. eating a variety of healthy foods.

C. drinking at least six glasses of juice.

D. excluding all fat from his or her diet.

B. Eating a variety of healthy food. It's not A because the body needs more than just protein. It can't be C because even though juice might have vitamins (and a LOT of sugar), it might not have pulp from the fruit that it is made out of. Pulp gives you fiber. It cannot be D because even if you don't eat anything fatty, some fats are actually necessary for your body. It's got to be B.