TOEFL Listening: TPO-TOEFL听力TPO - 57JFV99G12X2NE35R$

What is the lecture mainly about? A. Techniques used by the Natufians for building shelters. B. Different interpretations of archaeological evidence from Natufian sites. C. Strategies used by different hunter-gatherer societies in response to climate change. D. The development of the Natufians into an agricultural society.