TOEFL Reading: ETS-TOEFL阅读机经 - 8Z23W05Y6WGVKA57L$

In paragraph 2, why does the author compare the use of juniper with pinon in the construction of buildings? A. To prove that juniper is more suitable for building construction than pinon is B. To indicate that the choice of wood for building construction depended on the age of the tree species C. To support the claim that wood use changed over time in a patterned way D. To identify the features of juniper that made the Anasazi use it more often than pinon for constructing buildings