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As permafrost thaws it releases carbon dioxide and in turn contributes

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As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 04 May 2018, 10:39
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A
B
C
D
E

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Question Stats:

69% (01:40) correct 31% (01:53) wrong based on 331 sessions

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As permafrost thaws it releases carbon dioxide and in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting.


A. dioxide and in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting

B. dioxide and in turn contributes to global warming and helps increase the speed of Greenland, which is already warming faster than the rest of the planet, defrosting

C. dioxide, which in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting

D. dioxide, which in turn contributes to global warming and helps increase the speed at which Greenland, which is already warming faster than the rest of the planet, defrosts

E. dioxide, which in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet, has defrosted

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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 04 May 2018, 10:46
D, relative pronouns and singular verb form defrosts is correctly used.

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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 07 May 2018, 01:58
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Bunuel wrote:
As permafrost thaws it releases carbon dioxide and in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting.


A. dioxide and in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting

B. dioxide and in turn contributes to global warming and helps increase the speed of Greenland, which is already warming faster than the rest of the planet, defrosting

C. dioxide, which in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet and defrosting

D. dioxide, which in turn contributes to global warming and helps increase the speed at which Greenland, which is already warming faster than the rest of the planet, defrosts

E. dioxide, which in turn contributes to global warming and helps increase the speed that Greenland, which is already warming faster than the rest of the planet, has defrosted


VERITAS PREP OFFICIAL SOLUTION:



This problem is filled with several “which” modifiers so start by analyzing those. There are two choices for the second “which” modifier at the end: in (A) and (C), the modifier goes right to the end of the sentence, while in the others, “defrosting”, “defrosts” and “has defrosted” are left outside of the modifier after a comma. A close look back shows that “Greenland” – the noun modified by the “which” clause – must have a verb: the sentence cannot end with “helps increase the speed THAT Greenland.” As a result, you can eliminate (A) and (C) because when you slash-and-burn the “which” modifier you discover a sentence construction error (no verb for Greenland).

To compare (B), (D), and (E) you should get rid of that second “which” modifier and look at each choice carefully. For (B), the sentence states: “As permafrost thaws it releases carbon dioxide and in turn contributes to global warming and helps increase the speed of Greenland...defrosting.” This sentence contains an improper series with three elements all linked with “and,” and the “speed of Greenland defrosting” is incorrect – it should be the “speed that Greenland defrosts”. (D) and (E) are very similar but feature the verb tense choice of “defrosts” and “has defrosted.” A careful analysis of the verbs used earlier in the sentence shows that the present perfect “has defrosted” is illogical: you cannot say, “As permafrost thaws it releases carbon dioxide, which…helps increase the speed that Greenland HAS defrosted.” The verb “helps increase” demands a verb in the present tense as the permafrost thawing is only changing the speed at that same time, not before. Correct answer is (D).
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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 09 Aug 2018, 01:40
The correct answer is D i.e.
"D. dioxide, which in turn contributes to global warming and helps increase the speed at which Greenland, which is already warming faster than the rest of the planet, defrosts", I understand the reason for it as well.

My question is if there were an answer choice " dioxide, which in turn contributes to global warming and helps increase the speed at THAT Greenland, which is already warming faster than the rest of the planet, defrosts", would this be correct?
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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 24 Jun 2019, 11:09
can somebody explain this question.
i don understand "defrosts", how it is correct
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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 24 Jun 2019, 20:31
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mangamma wrote:
can somebody explain this question.
i don understand "defrosts", how it is correct


Hello mangamma

Please carefully examine below explanation, hope it will help :)

Attachment:
D.PNG
D.PNG [ 41.27 KiB | Viewed 523 times ]


If not, questions are welcome
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Re: As permafrost thaws it releases carbon dioxide and in turn contributes  [#permalink]

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New post 25 Jun 2019, 07:33
1
GKomoku wrote:
mangamma wrote:
can somebody explain this question.
i don understand "defrosts", how it is correct


Hello mangamma

Please carefully examine below explanation, hope it will help :)

Attachment:
D.PNG


If not, questions are welcome


You explained it very clearly. Kudos to you :please
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Re: As permafrost thaws it releases carbon dioxide and in turn contributes   [#permalink] 25 Jun 2019, 07:33
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