TOEFL Reading: ETS-TOEFL阅读机经 - DQIP3LIPN0FTY339L$

According to paragraph 4, how were Mesolithic societies in central Europe able to meet their food needs for much of the year? A. By finding new opportunities for coastal adaptations wherever they could B. By keeping their base camps in dense forests with plenty of forest game C. By settling in areas that provided both predictable food resources and access to different kinds of environments D. Buy hunting farther and farther from their central base camps each day