Sentence Correction

In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.

[spoiler]OA IS D. WHY IS A INCORRECT ? [/spoiler]

A In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
B The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in assessing the problems that they face.
C A question that is irrelevant in assessing the problems that rural migrant workers face is whether they are better off materially than the urban working poor.
D In an assessment of the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
E The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in an assessment of the problems that they face.

pappueshwar wrote:In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.

[spoiler]OA IS D. WHY IS A INCORRECT ? [/spoiler]

A In assessing the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant. - PASSIVE
B The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in assessing the problems that they face.
C A question that is irrelevant in assessing the problems that rural migrant workers face is whether they are better off materially than the urban working poor. - AWKWARD
D In an assessment of the problems faced by rural migrant workers, the question of whether they are better off materially than the urban working poor is irrelevant.
E The question of whether the rural migrant worker is better off materially than the urban working poor is irrelevant in an assessment of the problems that they face.

IMO: D

A - In assessing the problems, ____ who did that ? No answer could be found in A. There is nothing wrong with the voice but its a opening modifier problem, we couldn't find a subject in it.
B/E - 'they' lacks a clear referrant
C - Seems to suggest as if the question is assessing and not the people

IMO D.

Request some expert to please focus on A vs D difference.

Regards.