The new government study, whose summary was made to be avail

hi,
Experts please clarify in option B whether omission of possessive pronoun 'its publication' is correct.

OFFICIAL EXPLANATION

In any SC question containing pronouns, you should assess those pronouns as a primary decision point. (A) and (C) both contain pronoun reference errors that lead to illogical meaning. Those two sentences seem to indicate that “its” refers to the summary, when it is supposed to be referring to the study – clearly illogical: the summary was not made to be available before the publication of the summary! It was made to be available before the publication of the study. Answer choice (D), although it does not have any pronoun issues, contains a similar meaning error, except with the study itself: the study was not made to be available ahead of the publication of the study! The summary was made to be available before the publication of the study. In (E), the structure is redundant. The “with” is not necessary and creates illogical meaning in combination with “of which”. Only (B) uses the correct modifier structure (one used commonly on the GMAT that many people don’t like) to show that the government study had a summary that was made available before publication. Answer is (B).

"which" is always come after comma ?
could anyone help me on this ?

Yes, "which" introduces a non-essential modifier and therefore should be after a comma. On the other hand "that" introduces an essential modifier and hence a comma should not be put before "that".

example: I hate dogs that bark... essential modifier.
meaning: Say there are 100 dogs and 30 of them bark. I hate only those 30 barking dogs (selectively).
Removal of the modifier would imply that I hate all 100 men
Removal of the modifier would imply that I hate all 100 dogs rather than just those 30 barking dogs - meaning changes.

example: I hate dogs, which bark... non-essential modifier.
meaning: Say there are 100 dogs. I hate all 100 of them. Extra information- those 100 dogs bark.
Removal of the modifier would still imply that I hate all 100 dogs - the meaning does not change.

Since it is clear whose publication is discussed, it is alright to omit "its".

The new government study, whose summary was made to be available ahead of its publication, highlights the size of Canada’s banking sector in relation to the rest of the country’s economy.

A whose summary was made to be available ahead of its publication
B a summary of which was made available ahead of publication
C which had a summary made available ahead of its publication
D which was made to be available ahead of publication with a summary
E with a summary of which was made available ahead of publication

A whose summary was made to be available ahead of its publication -- "Made to be". Awkward and pretty sure this isn't the correct idiomatic usage.

B a summary of which was made available ahead of publication -- Correct. Maybe it could have been "study's publication" here or its publication. But out of the remaining choices, this seems the better one.

C which had a summary made available ahead of its publication -- Meaning error. Study had a summary made available? Illogical.

D which was made to be available ahead of publication with a summary - Meaning error. Study wasn't made available. Only the summary.

E with a summary of which was made available ahead of publication -- Meaning error. The preposition "with" suggests that both the study and the summary were made available.

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