The correct option is A a-iv, b-iii, c-i, d-ii
Nutrients include food components like carbohydrates, proteins, fats, water, vitamins and minerals. Out of which carbohydrates, proteins, fats and water are the nutrients required in more quantity(macronutrients) and vitamins and minerals are required in minute quantities(micronutrients). Proteins are recommended for bodybuilding. Dietary fibers or roughages are the bulk forming agents. Carbohydrates and fats are energy giving food components.