sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperature and densities

B. prevented from having its acoustic energy dissipated by

C. its acoustic energy prevented from dissipating by

D. its acoustic energy prevented from being dissipated as a result of

E. preventing its acoustic energy from dissipating by

IMO A.
E- dangling modifier
C & D - run on
B - dont like having
A- Prevented from ..... acts as a modifier.

what is the source of this problem?

if it's really a GMATPREP problem, could you please post a screen shot as proof?

if it's not, could you please cite the source?

thanks.

I found this problem on another forum
http://www.urch.com/forums/gmat-sentenc ... stion.html
it says this is a gmat prep question.

What is the OA?

i think the answer should be D
what say

i say that we table all discussion of this problem until someone comes up with PROOF that it is actually a GMAT PREP SOFTWARE question.
it really, really doesn't seem like one.

i.e., some user should post a SCREEN SHOT OF THIS PROBLEM, FROM THE ACTUAL GMATPREP SOFTWARE, before we discuss it further. we don't want to get takeaways from a spurious "official" problem - takeaways that may or may not actually apply to the real test questions.

Hi Ron, this problem appears in the GMAT verbal review second edition problem 108. I'm not sure whether it's also in GMATPrep.

Could you please comment on it? I thought, C, the official answer was a run-on.

Hi Ron, don't need to answer this one. I figured out why C is not a run-on.

well mikrodj...could you please explain as to why C is nota run on sentence.

@ron this is A SC from Verbal Review 2nd edition Q-108

It's not a run-on because you don't a verb in the modifier.

prevented from dissipating by .... modifies acoustic energy.

if the phrase were written

its acoustic energy IS prevented from dissipating by .....

then it would be a run-on

-----


its acoustic energy prevented from dissipating by .... explains the previous clause.

I think this GMAT Prep problem is similar in structure


With surface temperatures estimated at minus 230 degrees Farenheit, Jupiter's moon Europa has long been considered far too cold to support life, and with 60 square miles of water though to be frozen from top to bottom

A) Europa has long been considered far too cold to support life, and with
B) Europa has long been considered far too cold to support life, its
C) Europa has long been considered as far too cold to support life and has
D) Europa, long considered as far too cold to support life, and its
E) Europa, long considered to be far too cold to support life, and to have

OA B

I'm sure Ron can give a better explanation.

hey bro well put up...thanks a ton for pointing "is" out...this SC is really a tricky one...thanks again!!

:)

you're welcome. The sentence is really tricky, especially since is really easy to pick choice E at first.

hey - nice find.

there's not much of an "explanation" to give here, really. just do this:
* take a look at this problem (along with its OA). take a look at the other problem.
* note, and memorize, the pattern of each correct answer.
* try to create your own sentences with the same structure, to reinforce your knowledge.
e.g.
joe ran after the bus, his arms flailing wildly as he attempted to capture the driver's attention.

if you want to look up more examples online, this construction is known as an "absolute phrase".

This is an og question, Verbal review 2ed edition, 108.

yeah -- thanks for the cite.

this problem also appears in the gmat prep software; there are quite a few problems that appear in both sources.

for some reason, this "doubling up" appears to happen much less often with quant problems than with SC problems. interesting.