A nurse teaches the parent of an infant about introducing solid foods. The nurse should recommend which of the following foods should be introduced first?

A. Cooked egg whites: Egg whites are a common allergen and are generally introduced later, after the infant has tolerated other solid foods. Introducing them too early increases the risk of allergic reactions. B. Pureed meats: While pureed meats are a good source of iron and protein, they are typically introduced after iron-fortified cereals, which are easier to digest and less allergenic as first foods. C. Strained fruits: Fruits are often introduced early to provide vitamins and introduce new tastes, but they lack the iron content necessary for infant growth and development. Iron-rich foods are prioritized to prevent anemia. D. Iron-fortified cereal: Iron-fortified cereals are recommended as the first solid food because they provide essential iron, which is critical for brain development and preventing iron deficiency anemia in infants beginning solid foods around 4 to 6 months.