Geologists believe that the warning signs for a major : GMAT Sentence Correction (SC)
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# Geologists believe that the warning signs for a major

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Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 08:16
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Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying
B. changing measurements of the strain across a fault zone, and varying
C. changing the strain as measured across a fault zone, and variations of
D. changes in the measured strain across a fault zone, and variations in
E. changes in measurements of the strain across a fault zone, and variations among
[Reveal] Spoiler: OA
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Re: Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 08:22
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answer seem to be B again
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Re: Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 09:08
apurva1985 wrote:
answer seem to be B again

Nope!! Try again
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Re: Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 11:18
between B and D.(ll to original structure)

Orignal setence says "changing the measured strain" -->warning singn

B little distortion to thethe original meaning.
"changing measurements of the strain across" -- warning sign
--> chaning measurements -- warning sign

D -- changes in "measured strain"

D better than B.

Any other reasoning..????
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Last edited by x2suresh on 18 Jul 2008, 11:37, edited 2 times in total.
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Re: Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 17:16
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goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying

B. changing measurements of the strain across afault zone, and varying

C. changing the strain as measured across a faultzone, and variations of

D. changes in the measured strain across a faultzone, and variations in

E. changes in measurements of the strain across a fault zone, and variations among

OA is D.

This SC i stesting for IIlism.
Geologists believe that the warning signs for a major earthquake may include A,B,C and D

Geologists believe that the warning signs for a major earthquake may include
-sudden fluctuations in local seismic activity,
-tilting and other deformations of the Earth's crust,
-changes in the measured strain across a faultzone, and
-variations in the electrical properties of underground rocks
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Re: Geologists believe that the warning signs for a major [#permalink]

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18 Jul 2008, 22:52
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spriya wrote:
goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying -> eliminate since this is not in parallel with sudden fluctuations

B. changing measurements of the strain across afault zone, and varying -> eliminate

C. changing the strain as measured across a faultzone, and variations of -> eliminate

D. changes in the measured strain across a faultzone, and variations in -> BEST IMO (D)

E. changes in measurements of the strain across a fault zone, and variations among -> eliminate due to variations among which suggests preexistant variations and not the one which acts as indicator of quake.

Why isn't A correct? It is parallel to "tilting and other deformations of the Earth's crust"
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Re: Geologists believe that the warning signs for a major [#permalink]

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19 Jul 2008, 05:03
Vemuri wrote:
spriya wrote:
goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying -> eliminate since this is not in parallel with sudden fluctuations

B. changing measurements of the strain across afault zone, and varying -> eliminate

C. changing the strain as measured across a faultzone, and variations of -> eliminate

D. changes in the measured strain across a faultzone, and variations in -> BEST IMO (D)

E. changes in measurements of the strain across a fault zone, and variations among -> eliminate due to variations among which suggests preexistant variations and not the one which acts as indicator of quake.

Why isn't A correct? It is parallel to "tilting and other deformations of the Earth's crust"

(A) is incorrect since sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust is to be viewed as a single clause and here tilting goes with seismic activity .We need to look for parallelism between fluctuations and changes .Hence (D) is perfect
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Re: Geologists believe that the warning signs for a major [#permalink]

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15 Apr 2010, 09:34
I have to admit this one got me, but I now, I get it! The take-away here is to look for parallelism in parts of speech. With the "ing", it can be a verb or a noun. Once you figure it is a noun, all the others in the series have to also be a noun. Great question
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Re: Geologists believe that the warning signs for a major [#permalink]

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19 Sep 2013, 09:36
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Re: Geologists believe that the warning signs for a major [#permalink]

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19 Sep 2013, 12:16
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WaterFlowsUp wrote:
Bumping for review and further discussion*.
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goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying
B. changing measurements of the strain across afault zone, and varying
C. changing the strain as measured across a faultzone, and variations of
D. changes in the measured strain across a faultzone, and variations in
E. changes in measurements of the strain across a fault zone, and variations among

D It is.

Geologists believe that the warning signs for a major earthquake may include j, k, l, and m. These j, k, l, m are the items in a list of a warning signs. Hence needs to be parallel.

The first two items are in the form of Adjectival Phrases 1) sudden fluctuations..... 2)tilting ...... of the earth's crust.
So to take care of parallelism remaining two items also need to be in the form of Adjectival phrase.

A) INCORRECT :- changing and varying are verbs, which can not parallel to phrases

B) INCORRECT :- varying is verb, which can not parallel to phrase. Also Change is in the strain and not in the measurements.

C) INCORRECT :- changing is verb, which can not parallel to phrase.

D) CORRECT :- This choice makes the remaining two signs parallel to previous signs. changes...... variations.....

E) INCORRECT :- changes are in the strain and not in the measurements.

Hope That Helps!
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Re: Geologists believe that the warning signs for a major [#permalink]

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19 Jan 2015, 12:38
Hello from the GMAT Club VerbalBot!

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Re: Geologists believe that the warning signs for a major [#permalink]

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01 Oct 2015, 19:46
The original question needs to be edited to stop the underline right before the "the electrical properties....".

Moderators please edit the original post containing the question. Thanks.
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Re: Geologists believe that the warning signs for a major [#permalink]

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19 Jan 2016, 07:16
goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying

B. changing measurements of the strain across afault zone, and varying

C. changing the strain as measured across a faultzone, and variations of

D. changes in the measured strain across a faultzone, and variations in

E. changes in measurements of the strain across a fault zone, and variations among

Please explain the parallelism in the sentence- use of "changing" in option C and "changes" in D.
How it is working as a verb in C and as a noun in D?
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Re: Geologists believe that the warning signs for a major [#permalink]

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24 Jan 2016, 02:22
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gmatlbs wrote:
goalsnr wrote:
Geologists believe that the warning signs for a major earthquake may include sudden fluctuations in local seismic activity, tilting and other deformations of the Earth's crust, changing the measured strain across a fault zone, and varying the electrical properties of underground rocks.

A. changing the measured strain across a fault zone, and varying

B. changing measurements of the strain across afault zone, and varying

C. changing the strain as measured across a faultzone, and variations of

D. changes in the measured strain across a faultzone, and variations in

E. changes in measurements of the strain across a fault zone, and variations among

Please explain the parallelism in the sentence- use of "changing" in option C and "changes" in D.
How it is working as a verb in C and as a noun in D?

Per the meaning of the sentence - The warning signs for a major earthquake include 4 things - a,b,c,& d. In this case - a,b,c,&d need to be parallel.

a - Sudden fluctuations in ..
b - tilting and other deformations of
c - (need to keep the consistency of writing) changes in the measured strain
d - variations in

This kind of string parallelism is correct in option D.

In addition, Changing is not a verb . (Any wording is not a verb unless preceded by is,am, are etc)
Changes in - noun preposition structure - parrallel with other similar structure in the string.

Hope this helps
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Re: Geologists believe that the warning signs for a major   [#permalink] 24 Jan 2016, 02:22
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