The purpose of heat-treating stone tool raw material was to
a. create stone tools by subjecting the raw material to heat, which would cause the material to fracture into usable pieces.
b. make it more difficult for the raw material to be flaked and shaped.
c. improve the flintknapping properties of the raw material.
d. have hot stones that could be used for cooking (e.g., dropped into ceramic vessels).
e. disguise the original material so that others could not replicate the procedure.
c
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