Paleontologists studying the fossil record have estimated : GMAT Sentence Correction (SC)
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# Paleontologists studying the fossil record have estimated

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SVP
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Paleontologists studying the fossil record have estimated [#permalink]

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29 Nov 2007, 04:12
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Paleontologists studying the fossil record have estimated that the current collection of known fossils accounts for only approximately 10% of all species that have ever existed.

a) studying the fossil record have estimated that the current collection of known fossils accounts for only approximately 10% of all species that

b) that study the fossil record have estimated that the current collection of known fossils is only 10% of all species that

c) studying the fossil record have estimated that the current collection of known fossils accounts for only 10% of all species that

d) who study the fossil record have estimated that the fossils currently collected are only approximately 10% of all species which

e) who study the fossil record estimate that the current collection of known fossils accounts for approximately 10% of all species which

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Director
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29 Nov 2007, 07:43
Between A and C. Not sure if (C) changes the meaning (does not have 'appoximately'). It depends on how one interprets the sentence. Would go for (A).
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29 Nov 2007, 08:18
eyunni wrote:
Between A and C. Not sure if (C) changes the meaning (does not have 'appoximately'). It depends on how one interprets the sentence. Would go for (A).

I go for C, but I agree w/ eyunni, not sure if it changes the meaning.
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29 Nov 2007, 09:12
I realized from another post: 'estimate - approximately' is redundant. (C) it should be.
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29 Nov 2007, 09:13
The OA is C. Why? because in the original sentence, the word "estimate" and "approximately" are redundant. Also, although using either "that study" or "who study" could be appropriate, using the present participle "studying" is generally considered more concise.

Last edited by tarek99 on 29 Nov 2007, 09:17, edited 1 time in total.
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30 Nov 2007, 01:04
crap, fell for A. Missed the redundancy!

Also, D and E are out immediately because of the which towards the end.
30 Nov 2007, 01:04
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