An acceptable small meal for a person who is gluten intolerant would be Microwave popcorn and carrot sticks - C.
The reason for this is that people who're gluten intolerant (have celiac's disease) cannot eat whole-wheat toast, nor bread sticks nor graham crackers. They cannot eat anything wheat-related which contains gluten.
It could affect your health by helping bringing up your courage to do something like play a sport.