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Offshore oil-drilling operations entail an unavoidable risk

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Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 15 Jun 2008, 18:29
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

65% (02:07) correct 35% (01:17) wrong based on 266 sessions
Offshore oil-drilling operations entail an unavoidable risk of an oil spill, but importing oil on tankers presently entails an even greater such risk per barrel of oil. Therefore, if we are to reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers.

Which of the following, if true, most seriously weakens the argument above.

A) Tankers can easily be redesigned so that their use entails less risk of an oil spill.
B) Oil spills caused by tankers have generally been more serious than those caused by offshore operations.
C) The impact of offshore operations on the environments can be controlled by careful management.
D) Offshore operations usually damage the ocean floor, but tankers rarely cause such damage.
E) Importing oil on tankers is currently less expensive than drilling for it offshores.
[Reveal] Spoiler: OA

Last edited by fameatop on 22 Aug 2013, 03:18, edited 1 time in total.
OA not provided
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Re: Offshore oil drilling - CR [#permalink] New post 15 Jun 2008, 18:51
A

B and C strenthen, not weaken
D not related to spill
E not addressing the spill issue
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Re: Offshore oil drilling - CR [#permalink] New post 15 Jun 2008, 23:25
Straight A!
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Re: Offshore oil drilling - CR [#permalink] New post 16 Jun 2008, 01:28
A. Only in A we have a consideration of risks. No others with that. The conclusion pointed to reducong risks, not to levels of possible damage, and not to impact of accidents.
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Re: Offshore oil drilling - CR [#permalink] New post 16 Jun 2008, 02:11
IMO A for this one
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Re: Offshore oil drilling - CR [#permalink] New post 16 Jun 2008, 12:04
OA is A.

I chose D but realized that we are more concerned about reducing risk - not so much the one with less damange/effect.

thanks.

barfer wrote:
A. Only in A we have a consideration of risks. No others with that. The conclusion pointed to reducong risks, not to levels of possible damage, and not to impact of accidents.
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Re: Offshore oil drilling - CR [#permalink] New post 19 Jun 2008, 12:43
A for me.
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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 18 Aug 2013, 19:58
Hello,

Can anyone please explain to me how to rule out
[Reveal] Spoiler:
E


Regards,
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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 22 Aug 2013, 02:03
veenu08 wrote:
Hello,

Can anyone please explain to me how to rule out
[Reveal] Spoiler:
E


Regards,
Veenu


Money is not a concern here.So we can eliminate option E as it is out of scope.
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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 23 Oct 2013, 22:03
veenu08 wrote:
Hello,

Can anyone please explain to me how to rule out
[Reveal] Spoiler:
E


Regards,
Veenu


Just read the powerscore bible and you will know. There is no other book that explains this procedure in a clearer way.
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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 24 Oct 2013, 03:44
gmat blows wrote:
Offshore oil-drilling operations entail an unavoidable risk of an oil spill, but importing oil on tankers presently entails an even greater such risk per barrel of oil. Therefore, if we are to reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers.

Which of the following, if true, most seriously weakens the argument above.

A) Tankers can easily be redesigned so that their use entails less risk of an oil spill.
B) Oil spills caused by tankers have generally been more serious than those caused by offshore operations.
C) The impact of offshore operations on the environments can be controlled by careful management.
D) Offshore operations usually damage the ocean floor, but tankers rarely cause such damage.
E) Importing oil on tankers is currently less expensive than drilling for it offshores.


Key steps to come to the answer:

1. Clearly understand the Conclusion and the premise :
Conclusion - To reduce the risk of an oil spill without curtailing our use of oil, we must invest more in offshore operations and import less oil on tankers.
Premise - Offshore oil drill operations have an unavoidable risk of oil spill but importing on oil tankers carries an even greater risk.

Think of how the conclusion is reached on the basis of the premise and what assumptions can be made.
Assumption 1 : By investing more on offshore operations risk can be reduced.

If we somehow break this assumption then that will give us the correct answer.
If some answer choice gives us that investing in Oil tankers will be easy and will reduce risk then that will be the correct answer choice and A is exactly that.
Rest all answer choices are either irrelevant or strengthening the conclusion.

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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 10 Dec 2013, 23:49
Only choice A talks about reduced risk of spill by importing oil on tankers, thereby weakening the conclusion of the arguement. Hence it is my answer choice.
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Re: Offshore oil-drilling operations entail an unavoidable risk [#permalink] New post 11 Dec 2013, 00:49
IMO A.
A - Weakens.
B,C - Strengthen.
D,E - Unrelated to the conclusion.
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Re: Offshore oil-drilling operations entail an unavoidable risk   [#permalink] 11 Dec 2013, 00:49
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