What is the ideal proportion of macronutrients in a balanced diet?

The ideal proportion of macronutrients in a balanced diet is represented accurately by the first option. This distribution suggests that carbohydrates should make up 45-65% of total daily calories, proteins 10-35%, and fats 20-35%. This range aligns with the dietary guidelines provided by various health organizations, which emphasize the importance of a balanced intake of carbohydrates, protein, and fats to support overall health and well-being.

Carbohydrates serve as the primary energy source for the body, particularly for the brain and during physical activity, making a higher proportion of carbohydrates ideal. Proteins are essential for building and repairing tissues, as well as for various metabolic processes, while fats are important for hormone production, nutrient absorption, and providing energy. The suggested ranges in this correct option ensure that individuals can obtain sufficient energy from carbohydrates while also meeting their protein and fat needs for optimal health.

In contrast, the other choices offer proportions that either deviate significantly from established guidelines or do not provide a balanced approach to macronutrient intake, which can lead to deficiencies or excesses that negatively impact health.