akt715 wrote:
I know that A is wrong , but is it wrong because of usage of 'instead of which' or is it because of usage of 'by which'
Neither phrase is technically a grammatical error, but both are problematic -- the first one in particular. Take another look at (A):
Quote:
Finally reaching a decision on an issue that has long been politically charged in the Pacific Northwest, 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 to protect the fish.
First, it's tough to figure out what the initial "which" is referring to. It clearly doesn't make sense to write "instead of endangered fish" or "instead of salmon." If you keep digging, you might land on "ambitious plan."
But now you have the odd phrase, "instead of [the ambitious plan] they..." Wait. So "they" are instead of the "ambitious plan." Who's "they?" The politicians? Why would politicians be instead of a plan?
If you read it several times, you can puzzle out what all the pronouns are doing -- instead of the old plan, the politicians want to propose a new one. So I wouldn't feel comfortable saying they're definitively WRONG, but it takes an awful lot of work to arrive at a coherent meaning.
The next "which" isn't quite as bad, but the phrase, "by which they..." leaves the reader again having to scramble to figure out what the pronouns are doing. It seem as though "which" now refers to "steps" and "they" again goes back to "politicians." But wouldn't it be simpler and clearer and to dispense with the pronouns entirely and just write that the
steps are intended to protect the fish, as (B) does? Why throw in two consecutive murky pronouns?
If one answer choice is clear and logical and another is littered with confusing and possibly illogical constructions, you're better off choosing the clear and logical option, even if the murky constructions aren't definitively wrong according to a usage guide.
I hope that helps!