TOEFL Reading: ETS-TOEFL阅读机经 - EDD8NWM88A78LMKSL$

According to paragraph 4, anthropologists McBrearty and Brooks argue that archaeologists' traditional understanding of the Upper Paleolithic Revolution was flawed because A. they underestimated available African archaeological evidence B. the archaeological evidence available to them contained errors C. they could not distinguish artistic creations from objects meant for practical use D. they based their judgments on the limited archaeological record available at that time