单选题 .  ① Pueblo Bonito, the most impressive of the "great houses" at the prehistoric Chaco Canyon site in New Mexico, comprised over 600 rooms and 4 to 5 stories. ②Traditional interpretations have viewed the great houses as almost entirely residential with some archaeologists estimating the population of Pueblo Bonito at 1,200. ③But Windes recently challenged this view by pointing out the paucity of hearths recorded during the excavation of Pueblo Bonito, which revealed only 3 upper-story hearths, in contrast to 59 ground-floor hearths: habituation rooms would have required hearths for cooking and heat. ④It is possible, however, that the collapse of upper-story floors disturbed evidence of upper-story hearth to such an extent that they were not revealed by early excavations such as those conducted by Pepper's field crews in the 1890s and Judd's in the 1920s. ⑤Additionally, reliance on room features for early population estimates is complicated by the Chacoan's later remodeling, especially given Judd's disinclination to destroy later structures and features to expose earlier ones. ⑥The failure of early excavations to strip off intact floors may have concealed evidence of hearths in upper-story rooms.47.  The author of the passage would be most likely to agree with which of the following statements about Windes' argument? ______