TOEFL Listening: ETS-TOEFL听力机经 - 3U309P4400HR7NFDP$

Why does the professor describe features of Natufian sites? A. The features indicate that the Natufians established the largest early human settlement in the world B. The sites contain the first strong evidence of hunting by prehistoric people C. Compelling evidence of a sedentary lifestyle is available at the sites D. Artifacts at the sites are well preserved because of the region's dry climate