The grammar underlying the using of relative pronouns is that a relative pronoun can modify a slightly distant noun if it is not able to modify the word before it if logic doesn't permit and if the intervening phrase is essentially defining the eligible noun. (called a critical mission modifier by MGMAT)
Now let us look at choice C.
(C) the proportion of judges and partners at major law firms who are women has not risen comparably ---
1. Logic does not permit the inanimate firms to be related
...
Now let us look at choice C.
(C) the proportion of judges and partners at major law firms who are women has not risen comparably ---
1. Logic does not permit the inanimate firms to be related
...

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