A new test for AIDS has proved helpful in eliminating blood, : GMAT Sentence Correction (SC) - Page 2
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# A new test for AIDS has proved helpful in eliminating blood,

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Re: SC: A new test for AIDS [#permalink]

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18 May 2011, 03:40
Between A and C,
C brings out what exactly is being removed from the blood supply by using a that.

In A, the clauses seem to be non dependent rather than independent clauses (with subject and verb).

More so the portion between commas are non restrictive meaning 'contaminated with the virus' can be removed and analyzing the meaning gives a totally different sense.

Hence C scores over here.
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Re: SC: A new test for AIDS [#permalink]

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18 May 2011, 04:12
The culprit in A is the parenthesis that sets off between commas, the phrase ‘contaminated with virus’. The parenthetical phrase is an essential info and should not be separated by the commas on either sides.

In C a comma before blood would be appropriate.
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Re: SC: A new test for AIDS [#permalink]

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18 May 2011, 06:41
+1 C

The modifiers are place in the right order.
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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01 Mar 2012, 07:17
Initially i also marked A thinking that contaminated with virus modify blood correctly.i didn't read after removing the "contaminated with virus" from sentence

Agree with C
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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01 Mar 2012, 08:39
OA would have been correct if underlined text in (A) had 'which' after blood, such as

(A) in eliminating blood,[highlight]which is[/highlight] contaminated with the virus, from the nation's blood supply

OC is correct, 'that' correctly refers to blood and shows essential modifier.

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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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01 Mar 2012, 09:54
Hi all,

my 2 cents :

My ans A

we say - eliminating E, the wrong ans from the rest of the options

And not,

eliminating from the rest of the options E that is wrong - that precisely C does

Posted from my mobile device
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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01 Mar 2012, 11:55
IMHO- A,

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
contaminated with the virus clearly refers to blood and this seems the best answer option.

(C) in eliminating from the nation's blood supply blood that is contaminated with the virus
blood supply from blood just doesn't seem right.
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Re: SC: A new test for AIDS [#permalink]

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01 Mar 2012, 17:58
nusmavrik wrote:
misplaced modifier I think. "That" should be close to blood.

(B) in eliminating blood from the nation's blood supply that is contaminated with the virus ------> don't know what is contaminated. Whether the blood or the supply.

(C) in eliminating from the nation's blood supply blood that is contaminated with the virus ----> blood is contaminated. Of course "eliminating" cannot be contaminated.

Wish I had known this! I chose B, but reading this explanation makes sense for me. Thanks
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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07 Mar 2012, 03:07
A: if we remove the non essential clause, then sentence become nonsensical---wrong.
B: "That " is modifing blood supply - wrong (blood is adjective here)
C: correct
D: "helpful to" is wrong idiom
E: "helpful to" is wrong idiom
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Re: SC: A new test for AIDS [#permalink]

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07 Mar 2012, 04:35
suchoudh wrote:
cici wrote:
A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.
(C) in eliminating from the nation's blood supply (missing comma) blood that is contaminated with the virus

Resumptive or Summative modifier would need a comma but C does not supply it. Is there a typo in the post?

Agree. C is wrong because it needs a comma before blood.
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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07 Mar 2012, 16:48
killer1387 wrote:
gmatdreamer wrote:
what is wrong with D

(D) to eliminate blood that is contaminated with the virus from the nation's blood supply

D states virus is from nation's blood supply hence incorrect

"helpful in" is the correct idiomatic usage thant "helpful to".
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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08 Mar 2012, 05:29
I am confused with B and C. As B seems more meaningful than C I will go with B.
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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05 Mar 2013, 07:08
Meaning of the sentence: A test has proved eliminating the blood from the nations blood supply which is contaminated with virus

Splitting the sentence

A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

Here the subject is A new test for Aids
Verb is has proved

clearly it is a modifier error

my question is why Choice B is incorrect

in eliminating blood from the nations blood supply that is contaminated with the virus

The above sentence is clearly modifying the blood why still it is not correct.

Please help me

Thanks
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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05 Mar 2013, 07:22
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manikanth2304 wrote:
Meaning of the sentence: A test has proved eliminating the blood from the nations blood supply which is contaminated with virus

Splitting the sentence

A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

Here the subject is A new test for Aids
Verb is has proved

clearly it is a modifier error

my question is why Choice B is incorrect

in eliminating blood from the nations blood supply that is contaminated with the virus

The above sentence is clearly modifying the blood why still it is not correct.

Please help me

Thanks
Mani

Hi Mani,

You have understood the meaning correct. Your breaking of the sentence is also correct. So let's see what is the problem with Choice B:

Choice B - in eliminating blood from the nation's blood supply that is contaminated with the virus: Incorrect. In this choice, "that" modifies the immediate preceding noun entity "nation's blood supply". This is so because the preceding prepositional phrase "from the nation's blood supply" does not modify the noun "blood" that preceeds it. This prepositional phrase actually modifies action denoted by the noun "eliminating". Blood has been eliminated from where? Form nation's blood supply. So we see that "from nation's blood supply" is not the part of the noun "blood" and hence does not form a noun phrase in which case "that" may refer to "blood" - the head of the assumed noun phrase.

Take a look at the construction of Choice C where "from the nation's blood supply" has been correctly place closer to "eliminating" and "that" has been placed after "blood" for correct modification.

You can read the following article for more details on when can a noun modifier modify a slightly far away noun and when it cannot:
noun-modifiers-can-modify-slightly-far-away-noun-135868.html

Hope this helps.
Thanks.
Shraddha
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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17 Mar 2013, 08:46
cici wrote:
A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
(B) in eliminating blood from the nation's blood supply that is contaminated with the virus
(C) in eliminating from the nation's blood supply blood that is contaminated with the virus
(D) to eliminate blood that is contaminated with the virus from the nation's blood supply
(E) to eliminate blood from the nation's blood supply that is contaminated with the virus

please explain your answers

Hi Shraddha,
Can you please come up with detail analysis of this question.It would have been really helpful then.

I thought A to be right answer.

Appreciate your feedback.
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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18 Mar 2013, 15:53
egmat wrote:
manikanth2304 wrote:
Meaning of the sentence: A test has proved eliminating the blood from the nations blood supply which is contaminated with virus

Splitting the sentence

A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

Here the subject is A new test for Aids
Verb is has proved

clearly it is a modifier error

my question is why Choice B is incorrect

in eliminating blood from the nations blood supply that is contaminated with the virus

The above sentence is clearly modifying the blood why still it is not correct.

Please help me

Thanks
Mani

Hi Mani,

You have understood the meaning correct. Your breaking of the sentence is also correct. So let's see what is the problem with Choice B:

Choice B - in eliminating blood from the nation's blood supply that is contaminated with the virus: Incorrect. In this choice, "that" modifies the immediate preceding noun entity "nation's blood supply". This is so because the preceding prepositional phrase "from the nation's blood supply" does not modify the noun "blood" that preceeds it. This prepositional phrase actually modifies action denoted by the noun "eliminating". Blood has been eliminated from where? Form nation's blood supply. So we see that "from nation's blood supply" is not the part of the noun "blood" and hence does not form a noun phrase in which case "that" may refer to "blood" - the head of the assumed noun phrase.

Take a look at the construction of Choice C where "from the nation's blood supply" has been correctly place closer to "eliminating" and "that" has been placed after "blood" for correct modification.

You can read the following article for more details on when can a noun modifier modify a slightly far away noun and when it cannot:
noun-modifiers-can-modify-slightly-far-away-noun-135868.html

Hope this helps.
Thanks.
Shraddha

This point is often overlooked in modifier analysis - I wish more test-takers would read that e-GMAT guide or pg. 238 of the Manhattan SC book and focus on the immediately preceding noun-phrase instead of just the immediately preceding noun.

A good official example of this is OG13 #126 the-use-of-lie-detectors-is-based-on-the-assumption-that-83581.html
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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18 Mar 2013, 18:51
mmagyar wrote:
This point is often overlooked in modifier analysis - I wish more test-takers would read that e-GMAT guide or pg. 238 of the Manhattan SC book and focus on the immediately preceding noun-phrase instead of just the immediately preceding noun.

A good official example of this is OG13 #126 the-use-of-lie-detectors-is-based-on-the-assumption-that-83581.html

Very rightly said @mmagyar, in fact very succinctly put "focus on the immediately preceding noun-phrase instead of just the immediately preceding noun".

-Shraddha
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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21 Mar 2013, 04:13
egmat wrote:
manikanth2304 wrote:
Meaning of the sentence: A test has proved eliminating the blood from the nations blood supply which is contaminated with virus

Splitting the sentence

A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

Here the subject is A new test for Aids
Verb is has proved

clearly it is a modifier error

my question is why Choice B is incorrect

in eliminating blood from the nations blood supply that is contaminated with the virus

The above sentence is clearly modifying the blood why still it is not correct.

Please help me

Thanks
Mani

Hi Mani,

You have understood the meaning correct. Your breaking of the sentence is also correct. So let's see what is the problem with Choice B:

Choice B - in eliminating blood from the nation's blood supply that is contaminated with the virus: Incorrect. In this choice, "that" modifies the immediate preceding noun entity "nation's blood supply". This is so because the preceding prepositional phrase "from the nation's blood supply" does not modify the noun "blood" that preceeds it. This prepositional phrase actually modifies action denoted by the noun "eliminating". Blood has been eliminated from where? Form nation's blood supply. So we see that "from nation's blood supply" is not the part of the noun "blood" and hence does not form a noun phrase in which case "that" may refer to "blood" - the head of the assumed noun phrase.

Take a look at the construction of Choice C where "from the nation's blood supply" has been correctly place closer to "eliminating" and "that" has been placed after "blood" for correct modification.

Hope this helps.
Thanks.
Shraddha

Hi Shraddha,

I understood why A & b are wrong. But I think there should be a comma between nation's blood supply & blood in choice C.
Isn't "nation's blood supply blood that is contaminated....." an awkward construction? What am I missing?

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Re: SC: A new test for AIDS [#permalink]

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21 Mar 2013, 05:09
Helpful in doing
Helpful to do

If the usage of helpful is along with in (Helpful in +ing), A & C are the close choices
If the usage of helpful is along with to (Helpful to do), D & E are the close choices

Now, its estabilished that +ing is better than +to; Hence, between A&C, C is the better choice, because of the usage of "that" which makes sense!
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Re: A new test for AIDS has proved helpful in eliminating blood, [#permalink]

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21 Mar 2013, 05:51
debayan222 wrote:
cici wrote:
A new test for AIDS has proved helpful in eliminating blood, contaminated with the virus, from the nation's blood supply.

(A) in eliminating blood, contaminated with the virus, from the nation's blood supply
(B) in eliminating blood from the nation's blood supply that is contaminated with the virus
(C) in eliminating from the nation's blood supply blood that is contaminated with the virus
(D) to eliminate blood that is contaminated with the virus from the nation's blood supply
(E) to eliminate blood from the nation's blood supply that is contaminated with the virus

please explain your answers

Hi Shraddha,
Can you please come up with detail analysis of this question.It would have been really helpful then.

I thought A to be right answer.

Appreciate your feedback.

Hi Shradhha-Eagerly awaiting your in depth analysis for this question.

Please help...
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Re: A new test for AIDS has proved helpful in eliminating blood,   [#permalink] 21 Mar 2013, 05:51

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