GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - 707RA78B3Y774PQ7J

Which of the following, if true, would most call into question the reasoning of "the archaeologists conducting the studies"? A. Audubon was unable to correctly identify twelfth-century Cahokian sites B. Audubon made his observations before passenger pigeon populations began to decline. C. Passenger pigeons would have been attracted to household food trash D. Archaeologist have found passenger pigeon remains among food waste at eighteenth-century human settlements E. Passenger pigeons tended not to roost at the same sites for very many generations