When parts of the skeleton of a Neanderthal male were assembled

A. Neanderthals only hunted in the forests, using thrusting spears. So what? Does it give any information about the wound?
B. At that time, only humans had developed projectile weapons. So what? Does it give any information about the wound?
C. The Neanderthal's wound was, in all likelihood caused by a thrown spear. Let us put this on hold.
D. At that time only human beings had the type of weapon that would inflict this kind of wound. Let us put this on hold.
E. Neanderthals and humans often came into contact with each other. So what? Does it give any information about the wound?

Now, let's compare option C and D. C says that Neanderthal's wound was, in all likelihood caused by a thrown spear. Can chimpanzee use a spear, maybe it can. We do not know. So, it crosses out C. This leaves us with D.

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OFFICIAL EXPLANATION

It is a hypothesis that this Neanderthal male was killed by humans. To strengthen this conclusion we need tangible evidence that only humans and not animals or fellow Neanderthals would be able to inflict the kind of rib wound that proved fatal for this Neanderthal male.

(A) provides information about the hunting habits of the Neanderthals but does not address the peculiarities of this case.

(B) provides an interesting insight but fails to link the weapon used to the wound inflicted.

(C) provides fresh evidence but we still have no information as to who threw the spear. Combined with (B), (C) has the potential to help us arrive at the conclusion in the argument, but by itself it is inconclusive,

(D) CORRECT: This provides conclusive evidence - if only humans could wield the kind of weapon that inflicted the fatal wound on the Neanderthal. then they are just as well the perpetrators.

(E) provides helpful information but does not enlighten us on whether such meetings were for war or for peace.

Hence the correct Answer Choice is (D)­