Which of the following is a common food allergen?

Milk, peanuts, and soybeans are all recognized as common food allergens. Each of these foods can trigger allergic reactions in sensitive individuals, ranging from mild symptoms like hives or stomach upset to severe reactions such as anaphylaxis, which can be life-threatening.

Milk is a prevalent allergen, particularly among children, and is often one of the first allergens identified in infants. Peanut allergies are also very common and can be particularly severe, with many people experiencing serious reactions upon exposure. Soybeans, while perhaps less known to the general public as an allergen, are still significant in certain populations and can cause allergic reactions as well.

Recognizing the importance of all these allergens is crucial for food safety and handling practices, especially in preparing meals for those with known food allergies. Thus, the correct answer encompasses all the mentioned food items as common allergens, indicating the necessity of thorough labeling and awareness in food service settings.