Sentence Correction

hello!
I've got trouble with this one? any suggestions? thanks in advance

While once the union acquiesced to its English-speaking member’s prejudices in its supporting of the imposition of an alien tax on immigrant workers, after the 1897 the United Mine Workers made a determined effort to enlist Italians and Slavs in its ranks.

A) While once the union acquiesced to its English-speaking member’s prejudices in its supporting of
B) Where once the union acquiesced to its English-speaking member’s prejudice for the support of
C) Whereas once the union acquiesced to the prejudices of its English-speaking members by supporting
D) Where once the union had acquiesced to the prejudices of its English-speaking members by supporting
E) Where once the union acquiesced to the prejudices of its English-speaking members by supporting

Answer: C

We can only use "where" if we're referring to an actual place. We can only use "when" if we're referring to an actual time.

There's no place in this sentence, so "where" is right out: eliminate (b), (d) and (e).

While and whereas could both be correct in this sentence, so we need to find another difference. In this case, we eliminate (a) because "in its supporting of" is very clunky, so we choose (c).

Stuart Kovinsky wrote:We can only use "where" if we're referring to an actual place. We can only use "when" if we're referring to an actual time.

There's no place in this sentence, so "where" is right out: eliminate (b), (d) and (e).

While and whereas could both be correct in this sentence, so we need to find another difference. In this case, we eliminate (a) because "in its supporting of" is very clunky, so we choose (c).

Stuart could you please explain in detail with examples.

hemanth28 wrote:

Stuart Kovinsky wrote:We can only use "where" if we're referring to an actual place. We can only use "when" if we're referring to an actual time.

There's no place in this sentence, so "where" is right out: eliminate (b), (d) and (e).

While and whereas could both be correct in this sentence, so we need to find another difference. In this case, we eliminate (a) because "in its supporting of" is very clunky, so we choose (c).

Stuart could you please explain in detail with examples.

Sorry, which part did you want explained and exampled?

"member's" implies one single member. "members'" would be correct, but it's not in any of the answers. But in any case, "member's" eliminates A and B. As Stuart wrote, "where" eliminates B, D, and E, so that leaves C.