TOEFL Reading: ETS-TOEFL阅读机经 - MZ525X_75L353934L$

Why does the author mention "Aggersund site in Denmark" and its brief periods of occupation? A. To suggest that supply of year round food sources near earlier settlement sites had nearly disappeared B. To give an example of a small, temporary coastal site that took advantage of seasonal food sources C. To illustrate how small coastal settlements could not last as long as large forest settlements D. To high the fact that none of the Denmark camps were able to be occupied year-round.