The singe-family house constructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape, its framework of poles overlaid with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four feet.
a) same
b) banked with dirt as high as that of
c) banked them with dirt to a height of
d) was banked with dirt as high as
e) was banked with dirt as high as that of
I struggled between choice A and D, and ultimately choice D thnking that "was banked" is parallel to "was conical" but choice A is correct. Is this because its not the single family house that was banked with dirt but the framework of poles? Is there an issue with "high as" vs height?
Thanks!!