Final answer:
Macronutrients, including carbohydrates, proteins, lipids, and water, are considered to be nutrients found in plants, vegetables, animals, and animal by-products
Step-by-step explanation:
Macronutrients are nutrients that the body needs in relatively large amounts. They include carbohydrates, proteins, lipids, and water. These macronutrients can be found in a variety of sources including plants, vegetables, animals, and animal by-products.
Therefore, the correct answer is all of the above (a. protein, b. sodium, c. vitamin). Macronutrients, including carbohydrates, proteins, lipids, and water, are considered to be nutrients found in plants, vegetables, animals, and animal by-products