Sound

[ranell]

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

[rseeker2]

Is it C?

Between C and D, 'prevented by' is preferable.

D would imply that the dissipation is due to the boundaries created in the ocean.

[tohellandback]

IMO D
OA?

[gmat_dest]

IMO C.

D is passive.

C Looks the best.

[nervesofsteel]

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

E IMO

preventing shows the on going fature while sound is travelling....

[yogami]

IMO D because

B = > something else is trying to dissipate that acoustic energy other than sound itself. Changes meaning
C => for some odd reason this sentence is not hitting me. "from dissipatiion" sounds better than "from dissipating". Also dissipating by narrowly implies that something else is again trying to dissipate that energy other than sound itself
C => The passive for some odd reason is making sense in this particular case
E => same as B

In general dissipated by is followed by some external agent responsible for doing that act other than sound itself. Only D takes care of that issue hence D is the winner

[neha.singh]

chk out the following page of new york times

https://www.nytimes.com/1998/10/27/scien ... ine%20Life

it has the following sentence,
Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.