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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
57% (01:18) correct
43%
(01:27)
wrong
based on 393
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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
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
30 Jul 2017, 05:35
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The correct response is (B). This choice correctly uses the present-tense verb “allows” which agrees with the present-tense verb “are.” Additionally, it correctly places a comma before “which.”
If you chose (A), we need a comma before the word “which” to set it apart as a clear modifying phrase. The past tense verb “allowed” does not agree with the present tense verb “are” in the non-underlined portion of the second independent clause.
If you chose (C), no comma here before "which" means this choice is incorrect. We’ve also got a past perfect verb (“has allowed”) that conflicts with present tense “are” in the non-underlined portion of this sentence.
If you chose (D), remember the word “that” is restrictive meaning it is necessary to the meaning of the phrase, while "which" is not restrictive. The word “which” adds a sort of parenthetical note to a sentence.
If you chose (E), “water allowing” is unclear. We are missing a relative pronoun or a comma between “water” and “allowing.”
https://www.gmatpracticequestions.com/gm ... tice-test/
The correct response is (B). This choice correctly uses the present-tense verb “allows” which agrees with the present-tense verb “are.” Additionally, it correctly places a comma before “which.”
If you chose (A), we need a comma before the word “which” to set it apart as a clear modifying phrase. The past tense verb “allowed” does not agree with the present tense verb “are” in the non-underlined portion of the second independent clause.
If you chose (C), no comma here before "which" means this choice is incorrect. We’ve also got a past perfect verb (“has allowed”) that conflicts with present tense “are” in the non-underlined portion of this sentence.
If you chose (D), remember the word “that” is restrictive meaning it is necessary to the meaning of the phrase, while "which" is not restrictive. The word “which” adds a sort of parenthetical note to a sentence.
If you chose (E), “water allowing” is unclear. We are missing a relative pronoun or a comma between “water” and “allowing.”
https://www.gmatpracticequestions.com/gm ... tice-test/
