GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 50D5D553RF9CK304J

Which of the following can be inferred about the study by Chapman, Ward, and Krause? A. It was initially designed to investigate something other than social learning. B. It required researchers to observe individual guppies at multiple points in their life spans. C. It pointed to the possibility that population density may have little to do with guppies' social learning. D. It required the observation of guppies under conditions that closely mimicked the conditions of guppies in the wild. E. It indicated that guppies gain adaptive information from being reared with a relatively large number of conspecifics.