What essential nutritional need is required for each age group of infants?

The correct choice emphasizes the importance of specific nutritional needs tailored to each age group of infants. Infants undergo rapid growth and development, and their dietary requirements change as they age. For example, newborns primarily need breast milk or formula, which provides the necessary nutrients in appropriate quantities for their developmental stage. As they transition to solid foods, their nutritional needs evolve to include different vitamins and minerals essential for cognitive and physical development.

This individualized approach is crucial because infants of different ages require distinct proportions of macronutrients and micronutrients. Identifying and meeting these specific nutritional needs ensures that infants can grow healthily and reduce the risk of nutritional deficiencies or health issues in later life.