What micronutrients cannot be produced by the body and must be obtained from diet?

Vitamins are essential micronutrients that the body cannot synthesize in sufficient quantities, which is why they must be obtained through the diet. Each vitamin serves specific roles in various bodily functions, including metabolism, immune function, and cell and tissue maintenance. Since these compounds are not naturally produced by our bodies, dietary sources such as fruits, vegetables, grains, and animal products become crucial for maintaining health and preventing deficiencies.

The other options are macronutrients or primary energy sources. Fats, proteins, and carbohydrates can be synthesized by the body from other compounds, making them less critical in terms of dietary necessity. For example, the body can produce certain amino acids from proteins and derive energy from fats and carbohydrates through metabolic processes. Hence, while all macronutrients are important for health, vitamins stand out as the critical micronutrients that cannot be synthesized and must be consumed through our dietary choices.