New theories propose that catastrophic impacts of asteroids : GMAT Sentence Correction (SC)
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New theories propose that catastrophic impacts of asteroids

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New theories propose that catastrophic impacts of asteroids [#permalink]

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20 Oct 2009, 17:26
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New theories propose that catastrophic impacts of asteroids and comets may have caused reversals in the
Earth's magnetic field, the onset of ice ages, splitting apart continents 80 million years ago, and great
volcanic eruptions.
(A) splitting apart continents
(B) the splitting apart of continents
(C) split apart continents
(D) continents split apart
(E) continents that were split apart

[Reveal] Spoiler:
b
. I chose option B because of article "the". Other than that i dont know why the remaining options are wrong.

detailed explantion please.
Thanks in advance
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Re: sentence correction [#permalink]

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26 Oct 2009, 11:13
The main issue being tested here is parallelism. Whenever there are lists or comparisons, we want nouns to be compared to nouns, verbs to be compared to verbs etc.

In your example, the items listed in parallel are: reversals, the onset, splitting, and great volcanic eruptions.

Reversals, the onset, and volcanic eruptions are all nouns, only splitting is in verb form. We need to find an answer that changes this word to the noun form.

Answers A and C still have split in verb form. Incorrect.

answers D and E correctly use a noun, but the change in word order changes the original intent of the sentence. The focus of this list is on the actual splitting apart of continents, not the continent themselves. Eliminate

Only answer B correctly changes splitting to a noun form by adding the article "the."

HTH!
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Paul

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Re: sentence correction [#permalink]

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26 Oct 2009, 15:48
GMATBootcamp wrote:
The main issue being tested here is parallelism. Whenever there are lists or comparisons, we want nouns to be compared to nouns, verbs to be compared to verbs etc.

In your example, the items listed in parallel are: reversals, the onset, splitting, and great volcanic eruptions.

Reversals, the onset, and volcanic eruptions are all nouns, only splitting is in verb form. We need to find an answer that changes this word to the noun form.

Answers A and C still have split in verb form. Incorrect.

answers D and E correctly use a noun, but the change in word order changes the original intent of the sentence. The focus of this list is on the actual splitting apart of continents, not the continent themselves. Eliminate

Only answer B correctly changes splitting to a noun form by adding the article "the."

lol
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Re: sentence correction   [#permalink] 26 Oct 2009, 15:48
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New theories propose that catastrophic impacts of asteroids

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