Multiple Choice
The flint tools found by Boucher de Perthes were thought to be ancient because:
A) they were found in association with the bones of extinct animals
B) the flint from which the tools were made dated to more than 100,000 years ago
C) they had an exceptionally thick rind on their surfaces, the result of a long period of burial in soil
D) all of the above
Correct Answer:

Verified
Correct Answer:
Verified
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