Pls,help me with this Question

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Pls,help me with this Question

by thang » Wed Apr 30, 2008 12:56 am
Those who have visited the Grand Canyon have typically seen the layers of sediment in the gaping canyon, /with different colors that mark/ the passage of time like the rings in a tree trunk

a,
b,seen layers of sedement in the gaping canyon,whose different colors mark
c,been seeing layers of sedement in the gaping canyon, whose different colors are markers of
d,been able to see layers of sedement in the gaping canyon, with different colors marking
e, seen layers of sedement in the gaping canyon,marking by different colors

a is right because "whose "can refer to layers or canyon. but, pls, explain, "with... mark" refer to what. Pls, help, help, help.
Source: — Sentence Correction |

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Re: Pls,help me with this Question

by sasi78 » Thu May 01, 2008 9:12 am
the OA in Gmat800 is A : here is the explanation of the GMAT800
B and C are wrong because of the use of whose : whose can refer to canyon or layers.
D is wordy : seen is better than been able to see.
E is wrong because of the use of "making" : the subject og making is unclear : it can refer to the layers or to canyon.
In my view, A is unclear because "with can refer either to canyon or layers
practising these questions.

The sentence should read:
Those who have visited the gaping Grand Canyon have typically seen layers of sediment of different colors that mark the passage of time like the rings in a tree trunk.

Having said this, I guess A comes closest to being the right thing. Though D is also fine, it is too verbose.

E has a problem with "marking"
think with D, the use of typically before been able to makes all the difference...

so in D typically applies to been able to ... whereas it should apply to seen
It's a lousy sentence, but I don't see anything technically wrong with A. Choices B, C, and E are obviously wrong. Choice D, while it appears to be grammatically correct, subtly changes the meaning ("having seen" is not the same as "having been able to see"). So, I would say A is the best of the available choices.
NOTE: Apparently, this question is from Kaplan 800. It's not GMAT quality--not even close. So, I suggest that we NOT expend any more time or energy trying to figure it out.

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