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Manager
Joined: 31 Jul 2010
Posts: 110

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27 Oct 2012, 21:20
In surprising medical news, scientists investigating long-term effects of stroke are reporting that injury to a specific part of the brain, located behind the ear, can instantly and permanently break a smoking habit.

brain, located behind the ear, can instantly and permanently break a smoking habit
brain located behind the ear can instantly and permanently break a smoking habit
brain, located behind the ear, can instantly and permanently break the habit of smoking
brain located behind the ear, can instantly and permanently break a smoking habit
brain, the one located behind the ear, can instantly and permanently break the habit of smoking

i dont understand how the answer is a and not c

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Joined: 02 Jul 2012
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27 Oct 2012, 23:34
siddharth86 wrote:
In surprising medical news, scientists investigating long-term effects of stroke are reporting that injury to a specific part of the brain, located behind the ear, can instantly and permanently break a smoking habit.

brain, located behind the ear, can instantly and permanently break a smoking habit. modifier is correctly set off by a comma. Correct Answer.
brain located behind the ear can instantly and permanently break a smoking habit. Comma is missing for modifier. Wrong.
brain, located behind the ear, can instantly and permanently break the habit of smoking. a smoking habit is more concise than the habit of smoking. Grammatically correct but inconcise. Always prefer an adjective to a noun clause for concision. Could have been the correct answer in the absence of option A. But now Wrong answer.
brain located behind the ear, can instantly and permanently break a smoking habit. Modifier missing comma. Wrong answer.
brain, the one located behind the ear, can instantly and permanently break the habit of smoking. Incorrectly means to convey the meaining that the brain is located behind the ear. Wrong answer

i dont understand how the answer is a and not c

Modifiers are usually set off by a comma except when using a "that" clause. However, I doubt whether the GMAT would make the absence of a comma the only deciding factor between two answer choices. An expert opinion would help on that regard.

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VP
Status: Been a long time guys...
Joined: 03 Feb 2011
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30 Oct 2012, 05:23
Nice question guys, but this is not the correct thread.
Anyways, the topic you raised is ,IMO, based on conciseness.
When we have one noun noun modified by a prepositional phrase, we can turn the phrase into a Noun-Adjective and put it in front of the first noun, thus shortening the whole expression. This is most done when the preposition is of.
Therefore "smoking habit" is much better than "the habit of smoking".
Hope that helps.
-s
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18 Feb 2013, 12:47
In surprising medical news, scientists investigating long-term effects of stroke are reporting that injury to a specific part of the brain, located behind the ear, can instantly and permanently break a smoking habit.

Although the question has been discussed by the stalwarts , I would life to discuss further.

@Macfaux

Why the sentence is not correct without the commas and as explained in GMAT club tests how it would be by any chance a RUN ON => IC,IC

Scientists - Are reporting - SV Pair

Brain located ( located modifies brain even without commas, isn't it?)

that injury - introduces a dependent clause.

Injury - can instantly - SV Pair

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