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Manager
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Most geologists believe oil results from chemical [#permalink]
 18 Oct 2005, 17:47
Question Stats:
0% (00:00) correct
 0% (00:00) wrong based on 0 sessions
19. Most geologists believe oil results from chemical transformations of hydrocarbons derived from organisms buried under ancient seas. Suppose, instead, that oil actually results from bacterial action on other complex hydrocarbons that are trapped within the Earth. As is well known, the volume of these hydrocarbons exceeds that of buried organisms. Therefore, our oil reserves would be greater than most geologists believe.
Which of the following, if true, gives the strongest support to the argument above about our oil reserves?
(A) Most geologists think optimistically about the Earth’s reserves of oil.
(B) Most geologists have performed accurate chemical analyses on previously discovered oil reserves.
(C) Ancient seas are buried within the Earth at many places where fossils are abundant.
(D) The only bacteria yet found in oil reserves could have leaked down drill holes from surface contaminants.
(E) Chemical transformations reduce the volume of buried hydrocarbons derived from organisms by roughly the same proportion as bacterial action reduces the volume of other complex hydrocarbons.
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GMAT Club Legend
Joined: 07 Jul 2004
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Premise:
1) Geologists believe oil results from chem transformations of hydrocarbons dervied from organisms buried under ancient seas
2) Suppose oil actually results from bacterial action on other complex hydrocarbons trapped within the earth
3) Vol of hydrocarbons > volme of buried organism
Conclusion:
4)oil reserves greater than most geologists believe
I'll take E. E states that there are two sources of oil, one from chemicla transformations and another from bacterial action on complex hydrocarbosn. So the argument that the oil reserves are greater than what is made to believe is correct.
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Manager
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one more vote for E
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Current Student
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I will take E by POE in under two minutes.
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Manager
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I also had problems with the reasoning of that one.
now its clear, thanks ywilfred!
Source LSAT 1000 CR, OA is E!
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Director
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E for me as well
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SVP
Joined: 28 May 2005
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got E here.
_________________
hey ya......
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Manager
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OA is E
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