Answer:
A. Her food consumption level is decreasing, but it has more calories.
Step-by-step explanation:
In the situation above, it is clear that Sandy will lower her food consumption because of being busy in her debate team (other than her school subjects). It means, she will have less amount of time to eat. So to speak, she doesn't even have time to eat with her family for dinner at home.
However, her calories will increase because her food choice changes. Fast food have higher calories compared to home-cooked meals because they are oily and rich in fats.