GRE阅读jj Passage 201 Pueblo Bonito求解答～

啊GRE好难

Passage 201

❶ 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. ❷ Traditional interpretations have viewed the great houses as almost entirely residential with some archaeologists estimating the population of Pueblo Bonito at 1,200. ❸ But 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. ❹ It 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. ❺ Additionally, 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. ❻ The failure of early excavations to strip off intact floors may have concealed evidence of hearths in upper-story rooms.

3. Which of the following can be inferred about the excavation work performed by Judd's field crew?  （A）

A It did not unearth many room features that existed prior to Chacoan remodeling.
B It did not unearth any evidence of upper-story hearths.
C. It revealed only habitation rooms.

D. It resulted in the collapse of some room features and upper-story floors.

E. It confirmed traditional population estimates for Pueblo Bonito.

第五句我的逻辑没看懂，为什么Judd's disinclination to destroy later structures and features to expose earlier ones 和population estimate有什么联系吗？还有这里的later structure and features 和ealier structure feature分别指的是什么呀