单项选择题 Researchers have employed all of the following methods in researching potential explanations of the Anasazi evacuation EXCEPT（）

单项选择题 According to the passage, Ware's theory of the role of weather in the Anasazi evacuation differs from the position traditionally held by anthropologists in which of the following ways（）

单项选择题 The author considers the explanations put forward by Van West and Adler for the causes of the Anasazi evacuation to be（）