Which of the following is among the most common food allergies? Milk
Dairy products
Whey
All of the above

Mostly Dairy Products because people allergic to them. Like they can't eat cheese or milk, or something that is dairy.  1) Milk come from cows which are dairy cows. That produce dairy. So dairy is mostly a word and in every thing you see, the word is there. Dairy Products are common food allergies. Most people have them.

i believe it is true.        

its bassicly asking u   to answer it in your own words does that