My approach:
- Perkins is an idiot.

What I say:
- Mammoths killed > as humans hunters came in (12k yrs ago) > carried spearheads

What Perkins says:
- Humans did not kill mammoths
- Per expert no spearhead is found in mammoth bones

What I say (back to him):
- Have the spearheads be found among other bones (of extinct animals)
- What if spearheads were used to knock the animal down and they would kill it by other means


Answer: E follows the argument above. That is, spearheads were not left behind.

Hi
My approach will be
they are discussing about the mammonth's extinction due to human hunters (with spearhead)
option 1: is about the other animal bones which is out of scope
Option 2: is closer as this was discussing about spearhead and stones but spear can also be made of bones of other animals as well
Option 3: it talks about the survival and quantity of meat
Option 4: this is about painting on the wall and not about hunting and spearhead
Option 5: again closer as it was about the effort required for building these spearhead is high so they didn't leave them

so in my opinion this could be one approach

thanks and regards