C. TENTS MADE OF ANIMAL HIDES.
I chose this because you have to consider all things involved. If you found a small clay pot that could tell you that they were into pottery, not hunting. B. cave drawings of animals could tell you that they where hunters, but it could also mean that they were artists, either way, it's not certain that they could be hunters. C. tents made of animal hides: let's consider this . . . how would they get the hides to make the tents if they weren't hunters? D. small rock hearth I don't even know what a heart is, so I automatically scratched this answer out. So we're left with C as our only logical answer.