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donnylee
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mikemcgarry
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Dear donnylee,
My friend, I'm happy to respond. :-)

This sentence is correct:
In the last decades of his life, Rimsky-Korsakov produced a massive book on orchestration, which is still read by composition students today.
You are correct that "which" refers to "book."
Your sentence:
In the last decades of his life, Rimsky-Korsakov produced a massive book on orchestration, which at that time had more string instruments than brass ones.
The modification is fine, but the diction is questionable. In particular, "orchestration . . . had" is a phrasing that sounds off. Rather than "had," I might recommend the verb "employed" or "utilized."

My example sentence
Unlike most other elemental metals, gold resists the corrosive action of air and water, which enables it to maintain its characteristic luster unabated over time.
This is a mistake sentence, an example of the mistake of using "which" to refer to the action of a clause. Your sentence:
Unlike most other elemental metals, gold resists the corrosive action of air and water, and that enables it to maintain its characteristic luster unabated over time.
This repeats the same mistake with a different pronoun.
NO pronoun of any kind can EVER refer to a clause, not under any circumstances: for any pronoun to refer to the action of a verb is 100% wrong 100% of the time. Instead, we can create our own noun to encapsulate the action and use a pronoun to refer to that noun.
Unlike most other elemental metals, gold resists the corrosive action of air and water, a strength that enables it to maintain its characteristic luster unabated over time.
The word "strength" encapsulates the action of resisting the corrosive action of air and water. That's not the most elegant, well-written sentence, but it is grammatically correct. See:
GMAT Sentence Correction Tip: Create a Word

Does all this make sense?
Mike :-)
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Hey there,
I know that both of them can be used in other constructions. The problem usually appears when they are used as relative pronouns to show adjective or relative clauses. If you can't understand the difference between "which" and "it", you can try sentence correction online, maybe, it's your chance to make things done correctly. Also, don't forget, that a clause is a group of words having a subject and a verb. Good luck to you!
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Regular sexual orientation pronouns are words begat to fill a hole in English: the absence of third individual solitary pronouns to allude to either guys or females, or to the two guys and females, and all the more as of late, to allude to transgender or sex nonconforming people also. These new words were likewise called unbiased, dicey, or epicene, pronouns, and at times they're alluded to today as nonbinary pronouns. These pronouns fill a need, however none has been generally received, consequently they are the words that fizzled. What has succeeded is particular they, which emerged normally in English several years back, and is utilized both by speakers and scholars worried that their pronouns be comprehensive, and furthermore by numerous who don't give the make a difference much idea by any stretch of the imagination.
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nadinbroun
Regular sexual orientation pronouns are words begat to fill a hole in English: the absence of third individual solitary pronouns to allude to either guys or females, or to the two guys and females, and all the more as of late, to allude to transgender or sex nonconforming people also. These new words were likewise called unbiased, dicey, or epicene, pronouns, and at times they're alluded to today as nonbinary pronouns. These pronouns fill a need, however none has been generally received, consequently they are the words that fizzled. What has succeeded is particular they, which emerged normally in English several years back, and is utilized both by speakers and scholars worried that their pronouns be comprehensive, and furthermore by numerous who don't give the make a difference much idea by any stretch of the imagination.
Dear nadinbroun,

Thank you for speaking to this issue. While it's vitally important to keep in mind the needs of transsexual and intersexual people, and while in the future, the HR departments of business may need make moves to accommodate those folks, in the very narrow world of the GMAT, the world is binary, cisgendered, and heteronormative. All classes on the GMAT have only boys and girls.

For all the non-native speakers who frequent this forum, I want to make clear that, while in the future it may be important to learn these new non-binary pronouns in some context, on the GMAT, everything will be simply "he" or "she," "him" or "her." Just as all arguments are not just 3-4 sentences long, just as what has to be read is not limited to 500 or so words, just as knowledge of grammar extends beyond the confines of a single sentence, so the rules around gender on the GMAT are very simple and avoid all the complicated subtleties of the real world.

Mike :-)
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Hi mikemcgarry,

I was doing my regular SC practice and I found in the OG a very good example that is in contrast to your orchestration example.

OG 18 Verbal Review #288

Sixty-five million years ago, according to some scientists, an asteroid bigger than Mount Everest slammed into North America, which, causing plant and animal extinctions, marks the end of the geologic era known as the Cretaceous Period.
(D) an event that caused plant and animal extinctions, which marks (I chose this. WRONG)
(E) an event that caused the plant and animal extinctions that mark (CORRECT)

Snippet of answer's comment: the sentence needs an appositive form to restate the content of the main clause (an event), followed by a two-part chain of relative clauses (that caused ... that mark ...)

My thought process:
- Following our discussion on the exceptions for which, I thought (D) fits it perfectly. The "caused ... extinctions" takes priority following the relative pronoun that. And in line with exceptions for which, which can still be used to modify event
- logic checked, marks the end ... is optional. SV agreement checked, an event and marks. Proximity checked, just 6 words away from event.

But it seems that the answer comment is trying to tell me a new concept altogether, one which I interpret as a use of two "that"s to state two essential clauses.

Some enlightenment from you is appreciated.

Sincerely Yours,
Donny
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donnylee
Hi mikemcgarry,

I was doing my regular SC practice and I found in the OG a very good example that is in contrast to your orchestration example.

OG 18 Verbal Review #288

Sixty-five million years ago, according to some scientists, an asteroid bigger than Mount Everest slammed into North America, which, causing plant and animal extinctions, marks the end of the geologic era known as the Cretaceous Period.
(D) an event that caused plant and animal extinctions, which marks (I chose this. WRONG)
(E) an event that caused the plant and animal extinctions that mark (CORRECT)

Snippet of answer's comment: the sentence needs an appositive form to restate the content of the main clause (an event), followed by a two-part chain of relative clauses (that caused ... that mark ...)

My thought process:
- Following our discussion on the exceptions for which, I thought (D) fits it perfectly. The "caused ... extinctions" takes priority following the relative pronoun that. And in line with exceptions for which, which can still be used to modify event
- logic checked, marks the end ... is optional. SV agreement checked, an event and marks. Proximity checked, just 6 words away from event.

But it seems that the answer comment is trying to tell me a new concept altogether, one which I interpret as a use of two "that"s to state two essential clauses.

Some enlightenment from you is appreciated.

Sincerely Yours,
Donny
Dear donnylee,

I'm happy to respond. :-)

The appositive is "event," referring to the action of the previous clause. This is a correct structure, in both (D) & (E). The "which" that begins choices (A) & (B) is wrong, because it refers to an action.

Let's look at (D):
Sixty-five million years ago, according to some scientists, an asteroid bigger than Mount Everest slammed into North America, an event that caused plant and animal extinctions, which marks the end of the geologic era known as the Cretaceous Period.
The second clause, the clause beginning with "which" in (D) and "that" in (E)--to what does this clause refer? What is the target noun?
The first clause, "that caused plant and animal extinctions" modifies "events." If the second clause also modified "events," then these two clause would have to be in parallel. Here's correct parallel construction between the two clauses.
. . . an event that caused plant and animal extinctions and that marks end of the geologic era known as the Cretaceous Period.
This would be the correct structure if the intended target were the word "event." Because these two clauses are clearly NOT in parallel in any of the answer choices, it's very clear that the target must be a different noun. The only candidate, the noun that the second clause touches, is the noun "extinctions." This is a plural noun, so (D) has a SVA error.

That's why (E) is correct.

Does all this make sense?
Mike :-)

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