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Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

A. area, the number of which will however - Use of Comma to join two Independent clauses is incorrect. Moreover use of "The number" to modify POPULATION is incorrect
B. area; the size of the population, however, will - Correct since two Independent clauses are joined by semicolon
C. area, however the number of wolves will - Semi colon should be used before HOWEVER
D. area; the number of which will, however, - Use of "The number" to modify POPULATION is incorrect
E. area, when the size of the population will, however, - Why do we need to use WHEN
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​​Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

(A) area, the number of which will however
“Which” refers to the wolf population. But you cannot have the number of wolf population. It is either the number of wolves or the size of the wolf population. Eliminate.

(B) area; the size of the population, however, will
A semicolon is used to connect two independent clauses. The error in A has been corrected in option B.

(C) area, however the number of wolves will
The number of wolves is correct. However, we cannot use a comma to connect two independent clauses. “However” cannot be used as a conjunction to connect two independent clauses. Eliminate.

I was tired, however, I could not sleep- Incorrect.
I was tired. However, I could not sleep- correct.
I was tired; however, I could not sleep- correct.
I was tired but I could not sleep- correct. “But” is a conjunction and hence can be used as a connector.

(D) area; the number of which will, however,
Same as A. Eliminate.

(E) area, when the size of the population will, however,
“When” is incorrect as there is no reference to time. Eliminate.
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Dear Friends,

Here is a detailed explanation to this question-

AbdurRakib
Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

(A) area, the number of which will however
(B) area; the size of the population, however, will
(C) area, however the number of wolves will
(D) area; the number of which will, however,
(E) area, when the size of the population will, however,


Meaning is crucial to solving this problem:
Understanding the intended meaning is key to solving this question; the intended core meaning of this sentence is that state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, but the size of the population will ultimately be dictated by the number of prey in the area.

Concepts tested here: Meaning + Modifiers + Grammatical Construction

• "who/whose/whom/which/where", when preceded by a comma, refer to the noun just before the comma.
• A comma cannot join two independent clauses; such usage leads to the error of comma splice; to correct this error, the comma must be replaced with a semicolon or comma followed by a conjunction such as "and", "but" etc.
• “when” is used to refer to a point in time.

A: This answer choice incorrectly modifies “the federally designated recovery area” with “the number of which”, illogically implying that the number of the federally designated recovery area will ultimately be dictated by the number of prey in the area; the intended meaning is that the size of the wolf population will ultimately be dictated by the number of prey in the area; please remember, "who/whose/whom/which/where", when preceded by a comma, refer to the noun just before the comma.

B: Correct. This answer choice avoids the modification error seen in Option A, as it does not use the “comma + which” construction; Option B uses the phrase “the size of the population, however, will”, conveying the intended meaning – that state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, but the size of the population will ultimately be dictated by the number of prey in the area. Additionally, Option B correctly uses a semicolon to join the independent clauses “state wildlife officials are scheduled to take over...recovery area” and “the size of the population, however, will…area”.

C: This answer choice incorrectly uses a comma to join the independent clauses “state wildlife officials are scheduled to take over...recovery area” and “however, the number of wolves will…area”; please remember, a comma cannot join two independent clauses; such usage leads to the error of comma splice; to correct this error, the comma must be replaced with semicolon or comma followed by a conjunction such as "and", "but" etc.

D: This answer choice alters the meaning of the sentence through the phrase “the number of which will”; the construction of this phrase leads to an incoherent meaning, as there is no logical referent for the pronoun phrase “the number of which”; the intended meaning is that the size of the wolf population will ultimately be dictated by the number of prey in the area.

E: This answer choice alters the meaning of the sentence through the phrase “when the size of the population will”; the use of “when” incorrectly implies that state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, at the time when the size of the population will ultimately be dictated by the number of prey in the area; the intended meaning is that state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, but the size of the population will ultimately be dictated by the number of prey in the area; please remember, “when” is used to refer to a point in time.

Hence, B is the best answer choice.

To understand the concept of "Which", "Who", "Whose", and "Where" on GMAT, you may want to watch the following video (~1 minute):



To understand the concept of "Comma Splices" and "Run-ons" on GMAT, you may want to watch the following video (~6 minutes):



All the best!
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Hi Experts sayantanc2k GMATNinja
I got down to B and D based on sentence structure. (Coma+FANBOYS absent in remaining options for joining two independent clauses)

I think which in (D) correctly refers to wolf population. On which basis can one eliminate D?
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Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

A. area, the number of which will however
--> which can not stand for wolf because wolf is singular and plays the role of an adjective.
B. area; the size of the population, however, will
C. area, however the number of wolves will
D. area; the number of which will, however,
--> which can not stand for wolf because wolf is singular and plays the role of an adjective.
E. area, when the size of the population will, however,

Hi mikemcgarry :-D

I would to to ask if the phrase the number of wolf is correct? Is it mandatory to use plural form after the number of?

Many thanks for you great explanation!
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leanhdung
Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

A. area, the number of which will however
--> which can not stand for wolf because wolf is singular and plays the role of an adjective.
B. area; the size of the population, however, will
C. area, however the number of wolves will
D. area; the number of which will, however,
--> which can not stand for wolf because wolf is singular and plays the role of an adjective.
E. area, when the size of the population will, however,

Hi mikemcgarry :-D

I would to to ask if the phrase the number of wolf is correct? Is it mandatory to use plural form after the number of?

Many thanks for you great explanation!

Yes, it is mandatory to use plural - "the number of wolf" is wrong because there are more than one wolves.
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C. area, however the number of wolves will

So the reason for eliminating C is 1) the two independent clause joined by ',' and 2) usage of however. Correct?

I see the usage of 'The number of wolves' is correct in C and that's why I picked it ignoring the above two reasons to eliminate it.
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C. area, however the number of wolves will

So the reason for eliminating C is 1) the two independent clause joined by ',' and 2) usage of however. Correct?

I see the usage of 'The number of wolves' is correct in C and that's why I picked it ignoring the above two reasons to eliminate it.

seed,

You are correct. In C, "the number of wolves" is totally fine.
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Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.

A. area, the number of which will however : 'which' incorrectly refers to area
B. area; the size of the population, however, will : Right. We can keep this one. The statement after the semicolon is independent and there is no incorrect reference of 'which' in this one.
C. area, however the number of wolves will : sounds incorrect. There should be a semicolon before however. Also, since the original statement talks about the population, it is better to refer to the wolf population after the punctuation , rather than the number of wolves. (though this would only be a preference , not a point of elimination)
D. area; the number of which will, however, : 'which' incorrectly refers to area
E. area, when the size of the population will, however, : Looks like the officials will take over the job only when the size of the population is determined by the prey in that area.

Answer : B
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adkikani
Hi Experts sayantanc2k GMATNinja
I got down to B and D based on sentence structure. (Coma+FANBOYS absent in remaining options for joining two independent clauses)

I think which in (D) correctly refers to wolf population. On which basis can one eliminate D?


"Which" always refers to the noun immediately preceding it. In the case of 'D', it refers to "area" and not the wolf population, hence you can eliminate this.
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adkikani
Hi Experts sayantanc2k GMATNinja
I got down to B and D based on sentence structure. (Coma+FANBOYS absent in remaining options for joining two independent clauses)

I think which in (D) correctly refers to wolf population. On which basis can one eliminate D?


Hello Arpit/adkikani,

I am not sure if your doubt still persists. Here is the explanation nonetheless. :-)

In Choice D, which CANNOT refer to the wolf population because then Choice D will have the phrase the number of the wolf population.

This expression is incorrect the population cannot have any number. Choice A has the same error.

We can say either the size of the wolf population or the number of wolves.


Hope this helps. :-)
Thanks.
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AbdurRakib
The Official Guide for GMAT Review 2018

Practice Question
Sentence Correction
Question No.: 750
Next month, state wildlife officials are scheduled to take over the job of increasing the wolf population in the federally designated recovery area, the number of which will however ultimately be dictated by the number of prey in the area.


We can't say "the number of population". Correct phrase is "the size of population".

Also, we need a comma to separate "however" from rest of the sentence



A. area, the number of which will however

B. area; the size of the population, however, will

C. area, however the number of wolves will

D. area; the number of which will, however,

E. area, when the size of the population will, however,
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the number of which will however ultimately be dictated by the number of prey in the area.
Can this be called a noun-noun modifier for the above sc problem
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I would designate this more as an error in meaning surrounding the modifier. Remember that modifiers using words like "which" are required to modify the item that they are next to. In this case, that means that the modifier is modifying the word "area" rather than "wolves". That isn't logical, since the area isn't affected by the number of prey in the area.
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Hi,

Irrespective of the meaning of sentence, is the use of when correct in option E.
I considered that when can refer to "Next Month".
I just want clarify whether "when" should always be immediately preceded by the noun to which it refer or it can come after clause Eg-" Next month,..clause..., when...
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Hi Priyanka, relative pronouns (when in this case) follow similar rule as other modifiers:

Relative clauses should be placed as close as possible to what they are modifying.

Here, when is placed miles apart from next month.

Not a good construct.
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Is it possible to get this question right without knowing how however is used in a sentence?
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