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Scientists are currently trying to determine the extent to which tecto

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Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 05:41
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Scientists are currently trying to determine the extent to which tectonic plates have been shifted from their previous positions by earthquakes and other similar phenomena.


(A) to which tectonic plates have been shifted

(B) to which tectonic plates have shifted

(C) of the shift of tectonic places

(D) of tectonic plate shifting

(E) that tectonic plates have been shifted

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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 05:52
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+1 for A.

(A) to which tectonic plates have been shifted --> Correct, rectifies idiom error, and conveys intended meaning that "tectonic plates have been shifted by earthquake"

(B) to which tectonic plates have shifted --> Changes meaning

(C) of the shift of tectonic places

(D) of tectonic plate shifting

(E) that tectonic plates have been shifted

Hence, A.
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Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 06:42
Bunuel wrote:
Scientists are currently trying to determine the extent to which tectonic plates have been shifted from their previous positions by earthquakes and other similar phenomena.


(A) to which tectonic plates have been shifted

(B) to which tectonic plates have shifted

(C) of the shift of tectonic places

(D) of tectonic plate shifting

(E) that tectonic plates have been shifted



IMO

to is preferred over of.
A. have been should be followed by a time reference , which is missing in A + not so keen on usage of "shifted"
B conveys the correct meaning

B for me
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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 08:10
B for me too.
A-Have been needs a time reference. Example : Have been shifted from .......
B-Ok
C-Shift looks awkward. Sounds like a tectonic plates have been working in a shift like day shift or night shift.
D-They are not shifting presently so verb-ing is wrong
E-Extent that is wrong idiom
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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 08:22
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Here's my take between A and B :

Scientists are currently trying to determine the extent to which tectonic plates have been shifted from their previous positions by earthquakes and other similar phenomena.


(A) to which tectonic plates have been shifted --> Correct, "Have been shifted by earthquakes and other similar phenomena" is passive, and conveys the meaning that shifting happened because of earthquakes and other similar phenomena

(B) to which tectonic plates have shifted --> Incorrect, Use of "have shifted" gives us the impression that tectonic plates shifted on its own

Correct me if I am wrong.
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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 02 Aug 2018, 10:12
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Active voice 'have' shifted' and passive voice marker 'by' in the un-underlined part do not sync.
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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 03 Aug 2018, 01:09
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Bunuel wrote:
Scientists are currently trying to determine the extent to which tectonic plates have been shifted from their previous positions by earthquakes and other similar phenomena.


(A) to which tectonic plates have been shifted

(B) to which tectonic plates have shifted

(C) of the shift of tectonic places

(D) of tectonic plate shifting

(E) that tectonic plates have been shifted



KAPLAN OFFICIAL EXPLANATION:



Start with verb options: should the verb be have been shifted or have shifted? Normally one would want to avoid the passive have been shifted, but here it's necessary because the rest of the sentence tells you what did the shifting, i.e., the earthquakes. Therefore, the plates "have been shifted...by earthquakes"; eliminate (B). You can also eliminate (C) because of the shift...by earthquakes is incomplete without a verb. (E) is unidiomatic because that shouldn't follow extent. (D) makes no sense in the context of the sentence, so (A) stands.
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Re: Scientists are currently trying to determine the extent to which tecto  [#permalink]

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New post 30 Aug 2018, 01:31
Bunuel wrote:
Bunuel wrote:
Scientists are currently trying to determine the extent to which tectonic plates have been shifted from their previous positions by earthquakes and other similar phenomena.


(A) to which tectonic plates have been shifted

(B) to which tectonic plates have shifted

(C) of the shift of tectonic places

(D) of tectonic plate shifting

(E) that tectonic plates have been shifted



KAPLAN OFFICIAL EXPLANATION:



Start with verb options: should the verb be have been shifted or have shifted? Normally one would want to avoid the passive have been shifted, but here it's necessary because the rest of the sentence tells you what did the shifting, i.e., the earthquakes. Therefore, the plates "have been shifted...by earthquakes"; eliminate (B). You can also eliminate (C) because of the shift...by earthquakes is incomplete without a verb. (E) is unidiomatic because that shouldn't follow extent. (D) makes no sense in the context of the sentence, so (A) stands.



Bunuel,

WOuld you pls elaborate more about option C why its incorrect.

From my prospective, in this sentence "Scientists are currently trying to determine" is followed by two things and those two are joined by "and". And it should be parallel.

In Option A & B in presence of "have" verb they act as clause whereas 2nd entity is a phrase, and it is in non-underline part. SO to maintain parallelism 1st entity should also be a phrase rather than a clause.

Pls suggest.
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Re: Scientists are currently trying to determine the extent to  [#permalink]

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Re: Scientists are currently trying to determine the extent to   [#permalink] 18 May 2019, 11:53
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