Answer:
Because people just do that for no reason
Explanation:
Macronutrients, macronutrients are essential nutrients our body cannot produce on its own, these include Carbs, Lipids, and protein, these all produce energy and balance our metabolic rate, without them our bodies wouldnt process information, fight disease, and produce blood cells nearly as quickly
If you do experimental. You could have 2 different sets of kids (Same age, grade...etc) and give one group sugar such as...lucky charms and do nothing with the other group and see what happens. If you do a survey you're not really getting a full understanding if it changed their attention. I'd use experimental because you can actually observe the behavior