Multiple choice

Provides growth and repair of tissues

  1. protein

  2. iron

  3. <p>magnesium</p>

  4. pantothenic acid
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A Correct answer
Explanation

Proteins are essential macronutrients required for the growth, maintenance, and repair of all body tissues, including muscles, skin, and organs. Minerals like iron and magnesium, and vitamins like pantothenic acid, act as cofactors or regulators but do not serve as structural building blocks.

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