Final answer:
Rice is not a common pediatric food allergen, unlike cow's milk, wheat, and peanuts, which are among the most common allergens for children.
Step-by-step explanation:
In response to the question - which of the following foods is not a common pediatric food allergen, the answer is B. Rice. Common pediatric food allergies typically involve the immune system reacting negatively to certain food proteins, viewing them as harmful invaders. Many foods can cause allergies, but cow's milk, wheat, and peanuts are among the most common for children. Cow's milk, especially, should never be given to infants as its proteins are hard to digest for them. In contrast, rice is not commonly associated with food allergies in children, and therefore, it is considered to be a safer alternative in comparison to the other options listed.