TOEFL Listening: ETS-TOEFL听力机经 - EV638C3830MQ35H5P$

What is the professor's attitude toward the classification of ancient people as either foragers or farmers? A. She believes that such classifications have generally been accurate B. She doubts that any new evidence could challenge the classification C. She worries that present-day archaeologists are not considering key evidence D. She believes the evidence now indicates that the situation was more complex