Final answer:
Among the provided options, the nurse might suggest delaying the introduction of citrus fruits, as they can be allergenic. Potatoes, oat cereals, and green vegetables are generally considered safe for earlier introduction. Consulting a healthcare professional is key for tailored advice.
Step-by-step explanation:
The nurse's suggestion for delaying the introduction of certain foods in response to a mother's concern about the development of a food allergy in her 5-month-old would most likely include those foods that are known to commonly cause allergies. Among the options given, citrus fruits might be recommended to be introduced later due to the potential risk of allergies. They can be allergenic and are known to cause reactions in some individuals. In contrast, potatoes are generally not considered highly allergenic, nor are oat cereals and most green vegetables. These foods are less likely to cause allergic reactions in babies and are usually safe to introduce at an earlier age.
Common food allergens include nuts, eggs, milk, and certain grains, whereas potatoes are typically well-tolerated, making them a safer choice for early food introduction. However, it's always important to consult a healthcare professional before introducing new foods to a young infant, as guidelines for introducing allergens can evolve based on the latest research and individual health considerations.