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.htmlHi!
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.