Which of the following is a macromineral group?

• A. Iron, zinc, manganese
• B. Sodium, potassium, chloride
• C. Copper and zinc
• D. Calcium, Phosphorus, Sodium, Chloride, Potassium, Magnesium, Sulfur

Answer: (D)

Macrominerals are minerals needed in larger amounts by the body (roughly 100 mg per day or more) and are essential for structure, fluids, and electrolyte balance. The set including calcium, phosphorus, sodium, chloride, potassium, magnesium, and sulfur fits this category because these minerals provide the major framework for bones and teeth (calcium, phosphorus), regulate fluid and electrolyte balance (sodium, chloride, potassium), support enzyme function and energy metabolism (magnesium, phosphorus), and contribute to protein structure (sulfur). The other options mix minerals that are required in smaller amounts, known as trace minerals (like iron, zinc, manganese, copper). So the group containing all the major minerals is the correct macromineral group.