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# Some geologists argue that if oil is as common in unsampled

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Senior Manager
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Some geologists argue that if oil is as common in unsampled [#permalink]

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31 Jan 2012, 20:55
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Difficulty:

15% (low)

Question Stats:

77% (02:14) correct 23% (01:33) wrong based on 93 sessions

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Some geologists argue that if oil is as common in unsampled areas of the world as it is in those already sampled, our current estimate of reserves that exist underground must be multiplied by a factor of 10,000. From this we can conclude that we can meet the oil needs of the entire world for at least five centuries, even assuming that future consumption grows at an accelerating rate.

To reach the stated conclusion, the author must assume which of the following?

(A) It is possible to recover the oil contained in unexplored areas of the world
(B) The consumption rate for oil will not grow rapidly
(C) Oil will remain an important energy source for at least 500 years
(D) The world will achieve and maintain zero population growth
(E) New technology will make oil discovery and drilling more feasible than ever before

I correctly picked OA as an answer, but I chose it because others didn't make sense.
Can anyone explain the logic that shows why OA is correct ?
[Reveal] Spoiler: OA
If you have any questions
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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31 Jan 2012, 22:16
A is the best answer possible .
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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31 Jan 2012, 22:27
(A) It is possible to recover the oil contained in unexplored areas of the world
= >
 oil is as common in unsampled areas of the world as it is in those already sampled

=> Oil needs to be recovered from these areas, hence A is correct

(B) The consumption rate for oil will not grow rapidly
=> It is stated in the prompt that consumption will increase rapidly but the oil can sustain this growth in consumption

(C) Oil will remain an important energy source for at least 500 years
= > Irrelevant, though I almost selected this answer

(D) The world will achieve and maintain zero population growth
=> Irrelevant Information

(E) New technology will make oil discovery and drilling more feasible than ever before
= > Irrelevant Information

I hope this helps
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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22 Feb 2012, 20:47
This question puzzled me a lot more than some of harder CR questions.
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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23 Feb 2012, 05:21
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I also had to eliminat the others to come to A:

(A) It is possible to recover the oil contained in unexplored areas of the world
(B) The consumption rate for oil will not grow rapidly this has been stated
(C) Oil will remain an important energy source for at least 500 years this need not be true, it says at least 5 centuries

(D) The world will achieve and maintain zero population growth this is not needed as acceleration is mentioned already

(E) New technology will make oil discovery and drilling more feasible than ever before
we were never told drilling needs to be more feasible for achieving this
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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23 Feb 2012, 06:09
eybrj2 wrote:
Some geologists argue that if oil is as common in unsampled areas of the world as it is in those already sampled, our current estimate of reserves that exist underground must be multiplied by a factor of 10,000. From this we can conclude that we can meet the oil needs of the entire world for at least five centuries, even assuming that future consumption grows at an accelerating rate.

To reach the stated conclusion, the author must assume which of the following?

(A) It is possible to recover the oil contained in unexplored areas of the world
(B) The consumption rate for oil will not grow rapidly
(C) Oil will remain an important energy source for at least 500 years
(D) The world will achieve and maintain zero population growth
(E) New technology will make oil discovery and drilling more feasible than ever before

I correctly picked OA as an answer, but I chose it because others didn't make sense.
Can anyone explain the logic that shows why OA is correct ?

I reached the correct answer A by eliminatin the other choices.
B) The statement itself says that the future consumption grows at an accelerating rate.
C) It says for at least 5 centuries and not 500 years so eliminate.
D) As the consumption is increasing , the rise in the population can be one reason behind it and therefore eliminate this option.
E) Out of scope.
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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20 Mar 2012, 02:23
IMO A.... coz that is assumption and others are not
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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20 Mar 2012, 11:29
I agree with ans choice - A

,and I also agree with C (why is C wrong ?)

isnt 5 centuries = 500 years?
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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21 Mar 2012, 02:39
kuttingchai wrote:
I agree with ans choice - A

,and I also agree with C (why is C wrong ?)

isnt 5 centuries = 500 years?

C. Oil will remain an important energy source for at least 500 years
negate :Oil will not remain an important energy source for at least 500 years

okay so what it is still an energy source, not important though, now as it is an energy source, the same conclusion can again be drawn without any harm i.e. C doesnt affects the conclusion.

Hence C is wrong.

HTH
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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21 Mar 2012, 02:56
This is a strengthen question and thus, the answer to this qns should be a new premise.
C does nothing but repeat what has been written in the passage (500 years).

I agree that A is the right answer.
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Re: PT #2 CR9 Some geologists argue that if oil is as common in [#permalink]

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21 Mar 2012, 04:48
I agree with ans choice - A
Re: PT #2 CR9 Some geologists argue that if oil is as common in   [#permalink] 21 Mar 2012, 04:48
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