which of the following was a more caring act, Katniss proividing food for her family, volunteering as tribute, or helping out Peeta, when he was injured?

I think that "volunteering as tribute" embodies many of Katniss's traits including caring. She cares so deeply for her sister that she volunteers to go in the games and face almost certain death.

Thanks.

I guess, providing food for her family, wasn't really that "caring" because she HAD to do it , in order to survive...