Answer:Option D
Explanation:
Proteins is building block of the body. It is the most important component of the body which is required by all the cells.
The diets like soy milk, soy bean, animal products and legumes have high amount of protein in it. Besides this there is no need of supplements for the body if a person is taking food rich in these materials there is no need of supplements for the body.
The U.S diet consists of protein rich diet so there is no need of dietary supplements in order to meet the dietary requirements.