Elderly people should consume servings of fruits and vegetables each day, accompanied by whole-grain breads and cereals to meet fiber-intake recommendations. a. 2–3 b. 3–5 c. 5 or more d. 7 or more

They need 5 or more per day so your answer is C.

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.

delegated (sometimes called enumerated or expressed) powers are specifically granted to the federal government in article i, section 8 of the constitution. this includes the power to coin money, to regulate commerce, to declare war, to raise and maintain armed forces, and to establish a post office.