Which statement about energy provision from nutrients is true?

• A. Only carbohydrates provide energy
• B. Vitamins provide energy
• C. Carbohydrates, proteins, and fats provide energy
• D. Minerals provide energy

Answer: (C)

Energy comes from macronutrients that yield calories when metabolized. Carbohydrates, fats, and proteins supply usable energy, which the body converts into ATP to power activities and bodily functions. Carbohydrates and proteins provide about 4 kcal per gram, while fats provide about 9 kcal per gram, making fats the most energy-dense source. Vitamins and minerals, on the other hand, do not supply energy themselves; they support metabolism by acting as cofactors and enzymes, helping the energy-yielding nutrients release and transfer energy efficiently. So the true statement is that carbohydrates, proteins, and fats provide energy.