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## An Interesting Grammar Problem

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gtest Just gettin' started!
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An Interesting Grammar Problem Mon Sep 03, 2007 3:55 pm
Elapsed Time: 00:00
• Lap #[LAPCOUNT] ([LAPTIME])
Q. The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are
(B) crests and troughs that remain stationary although they are formed by rapidly moving air, are
(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is
(D) stationary crests and troughs although the air that forms them is moving rapidly, are
(E) stationary crests and troughs although they are formed by rapidly moving air, is

I have marked the answer as E, but the answer is C. The explanation is that it's incorrect to introduce a dependent adverbial [i]although[/i] clause into a prepositional phrase (with crests ...). I could not make much sense out of it. Can someone help me with it ?

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aim-wsc GMAT Titan
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Tue Sep 04, 2007 3:06 am
eliminate A, B & D because of 'are'

disclamer: I wont discuss technical details, adverbial, clause blah-blah... & hv not solved SC problems in months.
but
E doesn't show contradition in statement by using 'although'
C does it perfectly. 8)

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aim-wsc GMAT Titan
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Tue Sep 04, 2007 3:11 am
eliminate A, B & D because of 'are'

disclamer: I wont discuss technical details, adverbial, clause blah-blah... & hv not solved SC problems in months.
but
E doesn't show contradition in statement by using 'although'
C does it perfectly. 8)

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Please do not PM me, (not active anymore) contact Eric.

mayonnai5e GMAT Titan
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Sat Sep 15, 2007 4:14 pm
See my blog post today for an explanation:

http://www.beatthegmat.com/viewtopic.php?p=20585#20585

Mon Sep 17, 2007 8:07 am
ALTHOUGH IS A DEPENDENT CLAUSE, IT NEEDS TO BE PART OF A SENTENCE, WITH CRESTS AND TROUGHS ... IS A PHRASE, YOU NEED SUBJECT + VERB

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