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EducationAisle
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Coronary angiography, a sophisticated method for diagnosing coronary 22 Jan 2022, 07:44
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theyesguy
I have an issue with C

I believe the main point of the sentence is

"Coronary angiography is now administered selectively, because it uses x-rays to observe cardiac function."

and the rest of the information modifies Angiography. But in C,..

"for diagnosing coronary disease, involves the introduction of dye into the arteries of the heart and is now administered selectively, because it uses"

..the underlined 'and' makes it into secondary info..
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That's a good observation, but doesn't "and" give equal emphasis to the elements connected by "and"?

For example:

I like apples and oranges.

This clearly doesn't push oranges to "secondary info".
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Coronary angiography, a sophisticated method for diagnosing coronary 23 Jan 2022, 06:04
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theyesguy
I have an issue with C

I believe the main point of the sentence is

"Coronary angiography is now administered selectively, because it uses x-rays to observe cardiac function."

and the rest of the information modifies Angiography. But in C,..

"for diagnosing coronary disease, involves the introduction of dye into the arteries of the heart and is now administered selectively, because it uses"

..the underlined 'and' makes it into secondary info..


Please help.

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Hello theyesguy,

We hope this finds you well.

To answer your query, there is no rule that the use of "and" makes something secondary information. In fact, typically, parallel elements joined by "and" are of equal importance within the sentence.

We hope this helps.
All the best!
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Coronary angiography, a sophisticated method for diagnosing coronary 23 Jan 2022, 15:01
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But isn't it possible that involving.... could also modify a sophisticated method? since that noun isn't very far and -ing modifiers dont strictly need to "touch" the noun? I am confused. and how is it justified? Isn't it too far?
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Coronary angiography, a sophisticated method for diagnosing coronary 24 Jan 2022, 05:55
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insead22
But isn't it possible that involving.... could also modify a sophisticated method? since that noun isn't very far and -ing modifiers dont strictly need to "touch" the noun? I am confused. and how is it justified? Isn't it too far?
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Hello insead22,

We hope this finds you well.

To answer your query, the use of "involves", as seen in Option C, is superior from a meaning perspective because it removes any potential ambiguity.

Further, there is no issue with the use of "it"; although it is not ideal for a pronoun to be so far from the noun it refers to, such positioning is not incorrect; in this case, it is clear that "it" refers to "Coronary angiography" because this is the only logical referent for "it".

We hope this helps.
All the best!
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Coronary angiography, a sophisticated method for diagnosing coronary 30 Jul 2022, 11:29
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Isn't "because it uses X rays' can be taken as the cause of ' involves the introduction of the dye into the arteries of the heart'. Please clarify. Because both are parallel and connected by 'and'
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Coronary angiography, a sophisticated method for diagnosing coronary 31 Jul 2022, 05:34
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lovey8078
Isn't "because it uses X rays' can be taken as the cause of ' involves the introduction of the dye into the arteries of the heart'. Please clarify. Because both are parallel and connected by 'and'
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Hello lovey8078,

We hope this finds you well.

To clarify, "because it uses X rays" is not parallel to "involves the introduction of the dye into the arteries of the heart" and is not connected to it by "and".

"because it uses X rays" is a dependent clause that begins with a coordinating conjunction, and "involves the introduction of the dye into the arteries of the heart" is a verb phrase; "involves the introduction of the dye into the arteries of the heart" is connected by "and" to the parallel phrase "is now administered selectively", and "because it uses x-rays to observe cardiac function" adverbially modifies "is now administered selectively" to explain why coronary angiography is now administered selectively.

We hope this helps.
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Coronary angiography, a sophisticated method for diagnosing coronary 02 Aug 2022, 10:04
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egmat

I read an article about how a noun modifier can jump another noun modifier. Why that logic is not applicable here? Please Explain
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Coronary angiography, a sophisticated method for diagnosing coronary 08 Aug 2022, 23:12
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daagh
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As far as I see, outside American English, I am not sure whether there is any difference between 'method for' and 'method to'. While 'method to', 'method of', 'method in' are described by many dictionaries, they have completely ignored 'method for'.
The Free dictionary even says that the phrase 'method for diagnosing' is not found in the Dictionary and Encyclopedia.

I would wait for someone to cite a dictionary link that describes the difference. Nevertheless, I still take Chris Lee's reasoning that method for diagnosing is the correct idiom as he ought to know better.

In addition, is it at least there in any of the idioms list flashed by the Gmat training companies?

Therefore, this question has to be decided on other merits than on idioms, I believe.
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Coronary angiography, a sophisticated method for diagnosing coronary 14 Oct 2022, 05:50
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GMATNinja

I picked choice D and cannot wrap my head around why choice C is preferred, besides the somewhat dubious "method for" vs. "method to" split.

Why is the conjunction "and" in choice C is not expected to split the sentence into two independent sentences? Dana from GMATNinja does a great job explaining this rule in the modifier video lesson from a few months ago, however the rule doesn't seem to apply for this particular question.

Thanks in advance!
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Coronary angiography, a sophisticated method for diagnosing coronary 14 Oct 2022, 12:09
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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


hi sir

in option c-after coordinating conjunction "and" there should be main verb and noun,can anyone spot the parts of speech after "and"

is -verb
now -?
administered -?
selectively -?

thank you
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Coronary angiography, a sophisticated method for diagnosing coronary 24 Oct 2022, 11:30
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achloes
GMATNinja

I picked choice D and cannot wrap my head around why choice C is preferred, besides the somewhat dubious "method for" vs. "method to" split.

Why is the conjunction "and" in choice C is not expected to split the sentence into two independent sentences? Dana from GMATNinja does a great job explaining this rule in the modifier video lesson from a few months ago, however the rule doesn't seem to apply for this particular question.

Thanks in advance!
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The biggest problem with (D) is the noun modifier: at first glance, "that involves the introduction of a dye into the arteries of the heart" seems to modify "coronary disease." It seems to be suggesting that "coronary angiography" is a method for diagnosing a specific type of coronary disease -- the type that involves "the introduction of a dye...".

That of course makes no sense. Sure, we could figure out the intended meaning, but the logical meaning is more clearly expressed in choice (C).

Quote:
Why is the conjunction "and" in choice C is not expected to split the sentence into two independent sentences? Dana from GMATNinja does a great job explaining this rule in the modifier video lesson from a few months ago, however the rule doesn't seem to apply for this particular question.
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The conjunction "and" certainly can be used (along with a comma) to connect two independent clauses. But "and" can also certainly be used in a parallel list. For example, if we say that "Tim drinks bourbon, scotch, and beer", we have a parallel list -- but obviously, "beer" isn't an independent clause, and that's fine.

In (C), the "and" is just a parallelism trigger: "Coronary angiography (1) involves the introduction {...} and (2) is now administered..." So there's no need for an independent clause after the conjunction.

vibhakar2804

hi sir

in option c-after coordinating conjunction "and" there should be main verb and noun,can anyone spot the parts of speech after "and"

is -verb
now -?
administered -?
selectively -?

thank you
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Hopefully the explanation above answers your primary question:

  • "is administered" is the complete verb (passive voice)
  • "now" and "selectively" are just modifiers that describe that verb.

I hope that helps!
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Coronary angiography, a sophisticated method for diagnosing coronary 10 Apr 2025, 18:01
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