单项选择题

  Until recently, scrutiny of tree-ring records seemed to establish that a prolonged dry spell called the Great Drought drove the Anasazi Indians to abandon their magnificent stone villages on the Colorado Plateau. Line Groundbreaking climatological studies have convinced many archaeologists, however, that the Great Drought was not sufficiently austere to coerce the sudden evacuation of the Anasazi. Reviewing tree ring records, including moisture levels, Van West disputed the Great Drought theory by presenting evidence that enough corn could have been grown during the drought to support the population, that the Anasazi had weathered many severe droughts in the past, and that the evacuation actually began before the dry spell set in.
  Belying the popular image of the Anasazi as a peaceable kingdom of farmers and potters, some new research puts the blame for the evacuation on a bloody internecine war. Noting that the Anasazi had been suffering from malnutrition, shorter life spans and increased infant mortality, Adler suggests that the Anasazi were not able to move around freely to farm because their once open range was becoming balkanized into hostile fiefdoms. Perhaps as a reaction to drier weather, people in the Mesa Verde area began building dams and canals to trap and divert water, and the result may have been conflict and warfare. Unfortunately, other archeologists, having trouble envisioning how even drought, balkanization and warfare could make an entire civilization evacuate, are trying to combine archeological evidence with anthropological studies of the modern pueblo Indians to make the case that the Anasazi were roiled by a religious crisis as divisive as European medieval heresies. Analyzing the spread of religious symbols found on rocks or pottery and the distribution of ceremonial structures, some argue that the Anasazi may have been pulled from their homeland by a new religion emerging to the south, whose egalitarian spirit would have had great appeal to a civilization, like the Anasazi’’s, that was entering a dark age. Ware comes closest to a plausible synthesis of his predecessors’ theories in suggesting that the Anasazi world was rocked by a spiritual crisis catastrophic enough to cause a collapse of a civilization, and that the uprooted Anasazi apparently embraced a variety of new beliefs on migration to their new homes.
  Ware further argues that the precipitating factor in the evacuation may have been a change in climate after all. Recent climatological studies suggest that indeed, rainfall patterns were disrupted in a way that might have made the Anasazi disillusioned with their old religion: the customary pattern of heavy snows in the winter followed by summer monsoons had become unpredictable. Even if there was not a great drought, moisture may have been coming at the wrong times, and the summer rains, essential for nourishing the spring crops, were no longer reliable―the rain dances were not working anymore. Thus, Ware’’s theory accommodates the greatest variety of factors that may explain the Anasazi’s evacuation.

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?()

A.Ware relies upon a different body of evidence than previous anthropologist have, but reaches the same conclusions.
B.Ware ascribes a less dominant role to weather than had been traditionally posited by anthropologists.
C.Ware ascribes a more dominant role to weather than had been traditionally posited by anthropologists.
D.Ware believes weather played a role in the evacuation, but not the one traditionally cited.
E.Ware believes that another factor besides weather was responsible for the Great Drought.