Answer:
Both
Step-by-step explanation:
If you can multitask, maybe do both they are both important to your topic but if you just want one? then do world hunger. America (THE US) consumes a lot of food in a year enough for donation, it's wasted and of course many 1st world countries consume a lot if we stopped we could give the less fortunate our food waste that we do not need.
Or do the other one!