TOEFL Reading: ETS-TOEFL阅读机经 - SKBT3GNF9KT54214L$

According to paragraph 6, the apparent sudden flowering of creativity in Europe might be related to a change of climate in which of the following ways A. People became very creative in order to survive climatic extremes. B. As the climate became warmer, ancient European populations moved around much less. C. Improving climatic conditions drew substantial human migration into Europe. D. Climatic conditions became more favorable to preserving the archaeological record.