Chelsea had a piece of cheese, an apple, and a glass of milk for lunch.

The cheese contained 21 grams of protein, the apple 0.3 grams, and the
milk 9 grams. What percentage of her U.S. RDA for protein did the meal
provide if she needs 46 grams per day?
a. 1.52%
b. 152%
c. 65.87%
d. 6.59 %

The meal provided a total of 21 + 0.3 + 9 = 30.3 grams of protein. To find the percentage of her U.S. RDA, we can divide the amount of protein in the meal by the daily requirement, and then multiply by 100:

(30.3 / 46) x 100 ≈ 65.87%

Therefore, the correct answer is c. 65.87%.