Which of the following statements reflects an understanding of feeding practices for a 6-month-old infant?

The correct statement reflects a significant understanding of feeding practices for a 6-month-old infant by addressing concerns related to food allergies. At around this age, parents and caregivers are advised to introduce solid foods, but they should also be cautious about the types of foods given. Egg whites are often associated with a higher risk of allergic reactions in infants, so it's recommended to introduce them later, typically around the age of one year, after the infant has tried other foods that are less likely to provoke an allergy.

This choice aligns with guidelines that suggest delaying the introduction of potentially allergenic foods until the infant's digestive system is more mature. Understanding this aspect of feeding practices is crucial for promoting the child's health and reducing the risk of food allergies.

In contrast, the other statements may not accurately reflect appropriate practices for feeding an infant at this developmental stage. Mixing foods in a bottle can lead to unhealthy feeding habits, while fluoride supplementation before the emergence of permanent teeth may not be necessary unless prescribed by a pediatrician. Furthermore, while meats are indeed a good source of iron, introducing them does not usually occur immediately at 6 months; it's usually part of a broader approach to diversifying an infant's diet over time.