Freshly cooked food and a mirror actually.  You dont really need a mirro.  What can it do? Also you dont need freshly cooked food when you already have canned food.  Freshly cooked food doesnt have preservatives so it may rot.  It depends on how serious you earthquake is.  You don't really need anything if its a small one....
but what is the best answer between A and C ?
I think the best answer is c. Because you may use a mirror a source of light or heat when hiding :)