From the following given case or scenario, we can state that the phenomenon can be best explained by the following statement, i.e. In this particular case consumers or customers tend to be way more interested or inclined towards maximizing their calories per dollar rather than maximizing their health per dollar. Since, it has been provided that some individuals have increased consumption of the higher calorie substance.
A. Food. In any other situation it would apply to other, but as it seems they do not eat much food at home, this is their main source of food, it needs to be put there under food.
