308. For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.

(A) each a roof of poles and arrowweed
(B) each a roof of poles and arrowweed that are being
(C) with each being a roof of poles and arrowweed
(D) with roofs of poles and arrowweed to be
(E) with roofs of poles and arrowweed that are

Solution:

Redundancy + Pronoun

For correct meaning of the sentence, the section starting from the underlined part should explain ‘shades’. Hence, ‘with’ is not needed and the sentence must start with ‘each’. Thus, C, D, and E can be eliminated.
B is wordy and uses the nemesis- ‘being’.
A is the best choice.

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