Final answer:
Macronutrients supply the body with energy and serve as the building blocks for growth and repair. True.
Step-by-step explanation:
True. Macronutrients, such as carbohydrates, proteins, and lipids, supply the body with energy and serve as the building blocks for growth and repair.
Carbohydrates are the primary source of the body's energy, proteins supply the amino acids needed for building and repairing tissues, and lipids are used for building new cells and storing energy.