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Ranked among great mathematical scientists

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violetwind
 Post subject: Re: Ranked among great mathematical scientists
 Post Posted: Wed Aug 03, 2011 11:37 am 
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Students


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vjsharma25 wrote:
RonPurewal wrote:
patelbhavesh_09 wrote:
What is wrong with D?
Is it only "based on not only" should be "based not only on" or some other mistake as well?


“not only ... but also ...” is a parallel construction; therefore, the two signals (“not only” and “but also”) must be followed by similar constructions.
in choice (d), the second of these is followed by “on philosophical arguments”, so it's inappropriate for “not only” to be followed only by “experiment”; in that instance, it should be “on experiment”.

Isn't option "D" wrong for one more reason.
"al-Haytham was born in Iraq in 965 C.E., and had experimented extensively with light and vision"
These two ideas are presented in parallel structure but they should not be,because they are not equally emphatic. In parallel structures two ideas should have the same importance in my opinion.
Please confirm my understanding on this.


are choice A and D also wrong about the usage of past perfect tense? which makes the meaning that the scientist experimented sth before he was born.

Am I right?
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tim
 Post subject: Re: Ranked among great mathematical scientists
 Post Posted: Sat Sep 17, 2011 12:38 am 
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ManhattanGMAT Staff


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indeed..

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sabharwal.bhavna
 Post subject: Re: Ranked among great mathematical scientists
 Post Posted: Sat Nov 12, 2011 2:22 am 
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By the methods of elimination, I was able to eliminate the options A,D and E because the structures were not parallel. Also, the usage of preposition 'on' in D and E appeared suspect. I narrowed down to B and C, and chose B only.
My question is, why is C not correct? I rejected C because the structure ' and who experimented..' changed the voice of the sentence from active to passive. Also, the whole sentence turned from a set of parallel modifier structures to a cause and effect structure. The experiment was the cause and the laying down the effect.
Is the reasoning used by me to eliminate C correct? Do you find any more issues with the C?
Any help is appreciated.
Thanks.
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RonPurewal
 Post subject: Re: Ranked among great mathematical scientists
 Post Posted: Mon Nov 28, 2011 6:34 am 
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ManhattanGMAT Staff


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sabharwal.bhavna wrote:
I rejected C because the structure ' and who experimented..' changed the voice of the sentence from active to passive.


no.

first of all, “who experimented” is active voice.

second -- and much more importantly -- it appears that you think the passive voice is an error.
this is not true! the passive voice is just as respectable as the active voice; the choice just depends on the meaning of the sentence.
(again, this answer choice doesn't involve the passive voice anyway -- but, if it did, you could not reject it for using the passive voice.)


Quote:
Is the reasoning used by me to eliminate C correct?


no.

Quote:
Do you find any more issues with the C?
Any help is appreciated.
Thanks.


choice (c) contains two supposed parallel structures that are very much nonparallel.
first, “born…” and “who experimented…” aren't parallel.
second, the parallel structure at the end of the underline is also incorrect: “not only” is followed by just a noun, but “but also” is followed by a preposition + noun.
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