Which of the following is not a macronutrient?

Correct option is C

Sol. Macronutrients are nutrients required in large amounts for energy and body functions. These include proteins, fats, and carbohydrates, as they provide calories. Vitamins are micronutrients, meaning they are needed in small amounts for metabolic functions but do not provide energy.
Explanation of each option:
· (a) Proteins – Macronutrients that help in muscle repair, enzyme production, and overall body growth. They are made up of amino acids and play a crucial role in cell structure and immune response. They provide 4 kcal of energy per gram.
· (b) Fats – Essential macronutrients that serve as a major energy reservoir, help in the absorption of fat-soluble vitamins (A, D, E, and K), and provide insulation. Fats provide 9 kcal of energy per gram, making them the most energy-dense nutrient.
· (c) Vitamins – Correct answer. Vitamins are micronutrients, not macronutrients, and they do not provide energy. They are required in small amounts for processes such as immune function, vision, and metabolism. Unlike macronutrients, they do not contribute calories.
· (d) Carbohydrates – The primary source of energy, broken down into glucose for quick energy supply. They provide 4 kcal of energy per gram and are crucial for brain function and endurance activities.