Humans have pushed the limits of their what?

A. Limiting factors?

B. Carrying capacity

C. Food needs

I'm not sure but I think the answer is food needs

it can also be the second option, that's why ...

Answer: All of these can be true but what we've pushed most is food needs

Explanation: Of all the people on earth millions are starving without food and having to look through the trash for it, this is because some of us humans are hogging all the food for themselves and alot more than usual during this pandemic.