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POE explanation

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Can someone please elaborate on the POE in the explanation provided above
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flamingo
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Here is the explaination, 

The options D & E have modifier error. The Segment of the sentence "Finally reaching a decision on an issue that has long been politically charged in the Pacific Northwest" logically would refer to politicians and not ambitious plan, because politicians can reach a decsion and not a plan.
So D & E are out. 
Now let us see Items A, B, C

A. politicians decided to postpone by at least five years an ambitious plan to protect wild salmon and other endangered fish, instead of which they proposed a series of smaller steps, by which they intend
B. politicians decided to postpone by at least five years an ambitious plan to protect wild salmon and other endangered fish, proposing instead a series of smaller steps intended
C. politicians decided to postpone by at least five years an ambitious plan for protecting wild salmon and other endangered fish, and instead they proposed a series of smaller steps, intending
ABC = you plan ... to... something NOT plan....for....something. So ONLY AB
Also The biggest issue with choice C is that of meaning. The use of "comma + ing" (intending) seems to imply that politicians themselves are intending to protect the fish. Instead, the steps are intended to protect the fish. Second issue will be apparent if you look at the non underlined part "to protect the fish", which would require a parallel element in the form of "to protect" and not "for protecting". 
Now between A & B, Clearly B is more concise. 
A is too wordy and awkward! And "they" could refer to politicians or all the fish that was endangered.

 

answered Apr 7, 2015 by Guru (5,599 points)
1Comments
yes, explanation is clear now :-) thanks!
commented Apr 11, 2015 by Guru (1,348 points)
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