I don't know all of the answers in the menu, but I think that she could grow her own food, for one thing, and she could use the space to compost foods she doesn't eat for natural fertilizer.
Explanation:
I'm grabbing at straws here, I hope this answer helps.
I would tell my friend that C. it is not a good plan because the best way is eating healthy and regular exercise. Microwaving your food is not healthy at all.