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# Algae can be found living in almost

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Director
Joined: 14 Nov 2014
Posts: 662
Location: India
Schools: Rotman '20 (S)
GMAT 1: 700 Q50 V34
GPA: 3.76
Algae can be found living in almost [#permalink]

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30 Jul 2017, 04:33
2
6
00:00

Difficulty:

45% (medium)

Question Stats:

58% (00:52) correct 42% (00:51) wrong based on 156 sessions

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Algae can be found living in almost all parts of the world’s oceans; they are an important part of the world-wide ecosystem by virtue of their constant re-oxygenation of the water which allowed them to rejuvenate even the most polluted environments.

A. by virtue of their constant re-oxygenation of the water which allowed them

B. by virtue of their constant re-oxygenation of the water, which allows them

C. on the grounds that their constant re-oxygenation of the water which has allowed them

D. since the constant re-oxygenation of the water that has been allowing them

E. by virtue of their constant re-oxygenation of the water allowing them
Intern
Joined: 13 Aug 2011
Posts: 15
GMAT 1: 710 Q48 V38
GPA: 3.94
WE: Operations (Health Care)
Algae can be found living in almost [#permalink]

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30 Jul 2017, 11:52
Algae can be found living in almost all parts of the world’s oceans; they are an important part of the world-wide ecosystem by virtue of their constant re-oxygenation of the water which allowed them to rejuvenate even the most polluted environments.

A. by virtue of their constant re-oxygenation of the water which allowed them
Without comma which modifies water

B. by virtue of their constant re-oxygenation of the water, which allows them
Correct

C. on the grounds that their constant re-oxygenation of the water which has allowed them
Without comma which modifies water

D. since the constant re-oxygenation of the water that has been allowing them
It is not clear that the doer of re-oxygenation is Algae

E. by virtue of their constant re-oxygenation of the water allowing them
Without comma allowing modifies water

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Manager
Joined: 06 Sep 2016
Posts: 138
Location: Italy
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Re: Algae can be found living in almost [#permalink]

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11 Oct 2017, 08:18
In my opinion the question is poorly designed.
In the OA B "which" modifies "water" and is not correct as it should refer to "the algae virtue".
So I marked E because I supposed that the author forgot the "," before allowing
Re: Algae can be found living in almost   [#permalink] 11 Oct 2017, 08:18
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