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# Shortly after the Persian Gulf War, investigators reported

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Shortly after the Persian Gulf War, investigators reported [#permalink]

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21 Sep 2010, 15:39
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Shortly after the Persian Gulf War, investigators reported that the area, which had been subjected to hundreds of smoky oil fires and deliberate oil spills when regular oil production slowed down during the war, displayed less oil contamination than they had witnessed in prewar surveys of the same area. They also reported that the levels of polycyclic aromatic hydrocarbons (PAHs)—used as a marker of combustion products spewed from oil wells ignited during the war—were also relatively low, comparable to those recorded in the temperate oil producing areas of the Baltic Sea.
Which one of the following, if true, does most to resolve the apparent discrepancy in the information above?
(A) Oil contaminants have greater environmental effects in temperate regions than in desert regions.
(B) Oil contamination and PAH pollution dissipate more rapidly in temperate regions than in desert regions.
(C) Oil contamination and PAH pollution dissipate more rapidly in desert regions than in temperate regions.
(D) Peacetime oil production and transport in the Persian Gulf result in high levels of PAHs and massive oil dumping.
(E) The Persian Gulf War ended before the oil fires and spills caused as much damage as originally expected.

oa to come
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21 Sep 2010, 16:44
Dissipate is the key

I am choosing C , assuming persian region is a desert region.
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22 Sep 2010, 01:22
I think its D.
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22 Sep 2010, 01:29
We need to a fact which strengthens the information i.e, it should tell us why lower levels of PAH Levels was witnessed in the Gulf after the Gulf War as compared to PAH levels in the Baltic.

The best answer for this is C.
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22 Sep 2010, 01:43
IMO C.
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22 Sep 2010, 01:45
noboru wrote:
Shortly after the Persian Gulf War, investigators reported that the area, which had been subjected to hundreds of smoky oil fires and deliberate oil spills when regular oil production slowed down during the war, displayed less oil contamination than they had witnessed in prewar surveys of the same area. They also reported that the levels of polycyclic aromatic hydrocarbons (PAHs)—used as a marker of combustion products spewed from oil wells ignited during the war—were also relatively low, comparable to those recorded in the temperate oil producing areas of the Baltic Sea.
Which one of the following, if true, does most to resolve the apparent discrepancy in the information above?
(A) Oil contaminants have greater environmental effects in temperate regions than in desert regions.
(B) Oil contamination and PAH pollution dissipate more rapidly in temperate regions than in desert regions.
(C) Oil contamination and PAH pollution dissipate more rapidly in desert regions than in temperate regions.
(D) Peacetime oil production and transport in the Persian Gulf result in high levels of PAHs and massive oil dumping.
(E) The Persian Gulf War ended before the oil fires and spills caused as much damage as originally expected.

oa to come

It says 'displayed less oil contamination than they had witnessed in prewar surveys of the same area'. Thats my problem with C. I think D resolves the discrepancy of lower levels of contamination and PAH after the war and when compared to other peacetime areas like the baltic sea.
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22 Sep 2010, 03:37
Quote:
It says 'displayed less oil contamination than they had witnessed in prewar surveys of the same area'. Thats my problem with C. I think D resolves the discrepancy of lower levels of contamination and PAH after the war and when compared to other peacetime areas like the baltic sea.

That's my reason too...

D for me.
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22 Sep 2010, 03:38
D

C and D are both very close. However, I think D is a better option as it is more general and thus resolves both paradoxes, i.e., D explains why oil contamination and levels of PAH during the war in the desert region of the gulf were lower than those during prewar times in the desert region and those in the temperate Baltic region at all times.
Plus, it is mentioned in the premise that oil production slowed down during the time of war.

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23 Sep 2010, 03:06
Cornelius wrote:
D

C and D are both very close. However, I think D is a better option as it is more general and thus resolves both paradoxes, i.e., D explains why oil contamination and levels of PAH during the war in the desert region of the gulf were lower than those during prewar times in the desert region and those in the temperate Baltic region at all times.
Plus, it is mentioned in the premise that oil production slowed down during the time of war.

My answer is C,because the stimuls says that Baltic sea(temperate region) is more contanimated than the persian gulf which despite being exposed to smoky oil fires,oil spills is less contaminated
I think C resolves the paradox better than D does.
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23 Sep 2010, 03:39
aarthis2 wrote:
My answer is C,because the stimuls says that Baltic sea(temperate region) is more contanimated than the persian gulf which despite being exposed to smoky oil fires,oil spills is less contaminated
I think C resolves the paradox better than D does.

C does not address why the level of oil contamination after the war is less than the level witnessed in prewar surveys in the persian gulf. D addresses this.
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23 Sep 2010, 15:20
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noboru wrote:
Shortly after the Persian Gulf War, investigators reported that the area, which had been subjected to hundreds of smoky oil fires and deliberate oil spills when regular oil production slowed down during the war, displayed less oil contamination than they had witnessed in prewar surveys of the same area. They also reported that the levels of polycyclic aromatic hydrocarbons (PAHs)—used as a marker of combustion products spewed from oil wells ignited during the war—were also relatively low, comparable to those recorded in the temperate oil producing areas of the Baltic Sea.
Which one of the following, if true, does most to resolve the apparent discrepancy in the information above?
(A) Oil contaminants have greater environmental effects in temperate regions than in desert regions.
(B) Oil contamination and PAH pollution dissipate more rapidly in temperate regions than in desert regions.
(C) Oil contamination and PAH pollution dissipate more rapidly in desert regions than in temperate regions.
(D) Peacetime oil production and transport in the Persian Gulf result in high levels of PAHs and massive oil dumping.
(E) The Persian Gulf War ended before the oil fires and spills caused as much damage as originally expected.

oa to come

Can we assume that Persian gulf is a desert region, as the passage doesn't specify that. This would be an assumption on the part of the reader. Option D sounds more convincing to me. IMO D.
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23 Sep 2010, 20:20
Agree with meshtrap that we can not make any assumption
I pick E ..
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24 Sep 2010, 19:19
Dreamy wrote:
Dissipate is the key

I am choosing C , assuming persian region is a desert region.

My pick is D. I don't think making assumption is a good idea in doing CR questions.
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25 Sep 2010, 18:19
Noboru is generally slow in his replies. Checked on net and the answer is
[Reveal] Spoiler:
D
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25 Sep 2010, 23:56
+1 D
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03 Oct 2010, 18:10
meshtrap wrote:
Can we assume that Persian gulf is a desert region, as the passage doesn't specify that. This would be an assumption on the part of the reader. Option D sounds more convincing to me. IMO D.

Thats a very good point Meshtrap. A +1 to you.
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04 Oct 2010, 10:22
Cool!
although I fell for C like some other guys, after that I noticed my mistake
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04 Oct 2010, 23:50
clearly a,b,c are out
only d makes sense
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24 Oct 2010, 04:40
+1 D
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Re: Shortly after the Persian Gulf War, investigators reported [#permalink]

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13 Oct 2015, 17:24
The stimulus doesnt say - the pre and post war levels were the same. It says - the post-war levels were LOWER than those of the pre-war levels and PAHs levels were the same in the war zone and the Baltic. (the word used is 'comparable')

Once we have the facts correct, we will realize that the real discrepancy arises from the unexpected results of pre and post war pollution levels. Comparison with the Baltic area only serves to intensify the paradox. Or more plausibly the test maker is trying to mislead us and to tests us if we can separate the wheat from the chaff.

As soon as we get the core, it is quite easy to see how only D addresses the real issue and why is the right answer.
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Re: Shortly after the Persian Gulf War, investigators reported   [#permalink] 13 Oct 2015, 17:24
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