Please explain the parallelism in this question. For me the correct parallel construction would be "partly because X... and partly because Y" i.e. because after partly in both parts of the sentence. However that does not seem to be the case.
This question is a tweaked version of a question from 10th OG:
In recent years cattle breeders have increasingly used crossbreeding, in part that their steers should acquire certain characteristics
and partly because crossbreeding is said to provide hybrid vigor.
(A) in part that their steers should acquire certain characteristics
(B) in part for the acquisition of certain characteristics in their steers
(C) partly because of their steers acquiring certain characteristics
(D) partly because certain characteristics should be acquired by their steers
(E) partly to acquire certain characteristics in their steers
And the official explanation is:
Choice E is best; it best indicates purpose for crossbreeding-- partly to acquire
. In A, in part that
does not grammatically connect the underlined portion to the first part of the sentence (the independent clause). In both A and B, in part
is not parallel with and partly
in the nonunderlined portion. Choice C causes a misreading, suggesting that the steers' acquisition has caused
the crossbreeding. D awkwardly and illogically shifts to the passive voice: certain characteristics should be acquired by their steers
; the steers, however, are not agents in the acquisition.
Hope you have understood why D is wrong here.
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