Heavy Wear on Neandertals' Incisor Teeth Has Led Some Scientists

Heavy wear on Neandertals' incisor teeth has led some scientists to conclude that Neandertals used their front teeth

A) as a kind of third hand for gripping materials.
B) for hunting and killing small animals.
C) for shaping the cutting edges of stone blades.
D) for gouging trees to extract sap.