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Coronary angiography, a sophisticated method for diagnosing

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Coronary angiography, a sophisticated method for diagnosing [#permalink] New post 01 Feb 2011, 09:09
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A
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E

Difficulty:

  35% (medium)

Question Stats:

53% (01:46) correct 48% (00:43) wrong based on 40 sessions
Coronary angiography, a sophisticated method for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses x-rays to observe cardiac function.

(A) for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
(B) for diagnosing coronary disease involving the introduction of a dye into the arteries of heart, is now administered selectively, because of using
(C) for diagnosing coronary disease, involves the introduction of dye into the arteries of the heart and is now administered selectively, because it uses
(D) to diagnose coronary disease that involves the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
(E) to diagnose coronary disease involving the introduction of a dye into the arteries of the heart, which is now administered selectively, uses

Please explain me why the answer "C" is preferred over "D"?

PS.before posting this Q,I looked at below mentioned url but 227 Q was not there.
1-1000sc-100-brutal-q-explanations-2-level-of-question-85402.html
[Reveal] Spoiler: OA
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Re: Coronary angiography, a sophisticated method [#permalink] New post 01 Feb 2011, 14:01
SoniaSaini wrote:
Coronary angiography, a sophisticated method for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses x-rays to observe cardiac function.

(A) for diagnosing coronary disease involving the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
(B) for diagnosing coronary disease involving the introduction of a dye into the arteries of heart, is now administered selectively, because of using
(C) for diagnosing coronary disease, involves the introduction of dye into the arteries of the heart and is now administered selectively, because it uses
(D) to diagnose coronary disease that involves the introduction of a dye into the arteries of the heart, is now administered selectively, because it uses
(E) to diagnose coronary disease involving the introduction of a dye into the arteries of the heart, which is now administered selectively, uses

Please explain me why the answer "C" is preferred over "D"?

PS.before posting this Q,I looked at below mentioned url but 227 Q was not there.
1-1000sc-100-brutal-q-explanations-2-level-of-question-85402.html


Hi!

When you see lots of clauses and phrases, think modification.

The problem with D is the phrase "that involves the introduction of dye"; since that phrase immediately follows "coronary disease", that's what it modifies. However, that doesn't make any sense; we want that phrase to modify "coronary angiography".

In C, we have a comma after disease, turning that whole clause into a parenthetical comment that we can ignore when evaluating the sentence. So, C actually reads:

Quote:
Coronary angiography, blah blah blah, involves the introduction of dye...


which is exactly what we want.
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Re: Coronary angiography, a sophisticated method [#permalink] New post 01 Feb 2011, 16:29
There is only one small problem with the question: you have to understand what it says - and that can be sometimes a tricky part for non-native english speakers.
So for example, when you understand that the disease involves the introduction of a dye into the arteries, rather than the angiography, it is pretty easy to choose A and than just tap your forehead..
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Re: Coronary angiography, a sophisticated method [#permalink] New post 03 Jan 2013, 06:16
craky wrote:
There is only one small problem with the question: you have to understand what it says - and that can be sometimes a tricky part for non-native english speakers.
So for example, when you understand that the disease involves the introduction of a dye into the arteries, rather than the angiography, it is pretty easy to choose A and than just tap your forehead..



Very true ... can you please tell me how to distinguish between the two meanings??
Re: Coronary angiography, a sophisticated method   [#permalink] 03 Jan 2013, 06:16
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