Which statement describes the purpose of nutrition?

• A. Produce energy
• B. All the above
• C. Help prevent disease and debilitation
• D. Optimize biochemical processes

Answer: (B)

Nutrition serves multiple essential roles that together support health and function. Producing energy is a fundamental part of nutrition because the body relies on calories from carbohydrates, proteins, and fats to fuel work, growth, and daily activities. Nutrition also helps prevent disease and debilitation by providing vitamins, minerals, fiber, and other compounds that support immune function, tissue integrity, and long-term health, reducing the risk of deficiencies and chronic conditions. At the same time, nutrition optimizes biochemical processes by supplying the cofactors and coenzymes—often vitamins and minerals—that regulate enzyme reactions, metabolism, and the synthesis and repair of body tissues. Because all of these aspects are true, the statement that encompasses energy production, disease prevention, and metabolic regulation best describes the purpose of nutrition.