Early in the twentieth century, Lake Konfa became very : GMAT Critical Reasoning (CR)
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# Early in the twentieth century, Lake Konfa became very

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Early in the twentieth century, Lake Konfa became very [#permalink]

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03 May 2009, 23:03
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Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lak waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless.

The argument depends on assuming which of the following?

A. Apart from development related to the pipeline, there will be no new industria development around the lake that will create renewed pollution in its waters.
B. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction.
C. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.
D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.
E. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.

[Reveal] Spoiler: My Take
My pick is B. I do not have OA. Please post OA if you have.
[Reveal] Spoiler: OA
If you have any questions
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Re: Early in the twentieth century, Lake Konfa became very [#permalink]

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15 Aug 2013, 22:00
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akshaygaur wrote:
VeritasPrepKarishma wrote:
priyankur_saha@ml.com wrote:
Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lak waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless.
The argument depends on assuming which of the following?
A. Apart from development related to the pipeline, there will be no new industria development around the lake that will create renewed pollution in its waters.
B. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction.
C. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.
D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.
E. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.

[Reveal] Spoiler: My Take
My pick is B. I do not have OA. Please post OA if you have.

Responding to a pm: Why is (A) not correct?

What is the argument?
The argument is this: Leaks will be prevented so the oil pipeline will not cause pollution.

The argument focuses on the possible pollution caused by the oil pipeline in future, not any other source. The argument also doesn't say that the Lake will not be polluted through some other source. It narrowly focuses only on the pipeline. Hence (A) is not an assumption. It is out of scope for our argument. The argument only says that oil pipeline will not cause pollution. It doesn't say nothing else will cause pollution.

Hi Karishma,

Thanks for your prompt reply . I agree that argument talks about"leaks". But the conclusion states that those fears would not hold true if the new technique is good. Now "fears" i suppose refers to the polluted lake and decline in fish population. If we negate (A), it will weaken this conclusion and hence could be a contender for correct answer.
Again, I am not at all challenging (B) is correct. I just want to know how to tackle such questions on actual GMAT within a limited time.

Logically you might think that fear will be "Lake will get polluted and fish population will decline" but the argument clearly mentions the fear as "Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again."

So the fear is that the oil pipeline will cause pollution. This is an important point in CR. You have to focus on exactly what the argument is saying. You cannot generalize nor can you use outside information. Think of it as a debate. Say some people are in favor of constructing a new pipeline and some are against. So both sides are putting their points forward. Now if someone says that there could some other new development which causes pollution, that is out of scope of this argument, right? We are only considering whether this pipeline will cause pollution.
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Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews SVP Joined: 07 Nov 2007 Posts: 1820 Location: New York Followers: 34 Kudos [?]: 867 [2] , given: 5 Re: Early in the twentieth century, Lake Konfa became very [#permalink] ### Show Tags 06 May 2009, 10:31 2 This post received KUDOS bigfernheard, You are consistenent in choosing the Answers, but unfortunately both are incorrect. Option C in the original question (Priyankumar posted) and Optiion B ( in GMAT PREP posted by you) are same. Both are wrong. here B is the correct answer. Option C --> in GMATPRE is totall differrent, and agree with that answer. _________________ Your attitude determines your altitude Smiling wins more friends than frowning Senior Manager Joined: 30 Mar 2009 Posts: 256 Followers: 2 Kudos [?]: 144 [1] , given: 1 Re: Early in the twentieth century, Lake Konfa became very [#permalink] ### Show Tags 03 May 2009, 23:24 1 This post received KUDOS 1 This post was BOOKMARKED Yeah, the same like yours, IMO B Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lake waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless. The argument depends on assuming which of the following? A. Apart from development related to the pipeline, there will be no new industrial development around the lake that will create renewed pollution in its waters --> the argument just mentions about the planned construction of a pipeline, not about any other industrial development. The assumption will only prove that the argument has ground to develop, and is too narrow to provide ground for irrelevant fact to develop too B. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction --> Using the negating technique, if there is possibility that other threat can pose pollution to the lake, the fact that new techonology will prevent leak can't help completedly demolish the pollution to the lake. Therefore, the fears are still considerable. hence, Pick up this choice C. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa -->Assuming that this is true, but even when oil leaks to the lake, no facts state that oil-leaking is polluted to the lake. So, this is uncertainty D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause --> Negating this choice: leak of oil from the pipeline can cause more than one damage to the lake. So what ??? it does not weaken the argument that the techonology is inffective and that the fears is not groundless. So eliminate this E. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution --> out of scope Retired Moderator Joined: 18 Jul 2008 Posts: 994 Followers: 10 Kudos [?]: 196 [1] , given: 5 Re: Early in the twentieth century, Lake Konfa became very [#permalink] ### Show Tags 06 May 2009, 08:57 1 This post received KUDOS 1 This post was BOOKMARKED It's funny how I get this question correct in the forum, but then get it incorrect while taking the practice Test this weekend. This is a GMATPrep question. OA is C. The conclusion is actually "those fears are groundless", not "this technology is effective". The latter is the premise. If you mistakenly identified that as the conclusion, then you would have chosen B incorrectly. Attachment: cr - lake.JPG [ 109.88 KiB | Viewed 14854 times ] Veritas Prep GMAT Instructor Joined: 16 Oct 2010 Posts: 7132 Location: Pune, India Followers: 2140 Kudos [?]: 13712 [1] , given: 222 Re: Early in the twentieth century, Lake Konfa became very [#permalink] ### Show Tags 13 Aug 2013, 23:21 1 This post received KUDOS Expert's post priyankur_saha@ml.com wrote: Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lak waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless. The argument depends on assuming which of the following? A. Apart from development related to the pipeline, there will be no new industria development around the lake that will create renewed pollution in its waters. B. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction. C. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa. D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause. E. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution. [Reveal] Spoiler: My Take My pick is B. I do not have OA. Please post OA if you have. Responding to a pm: Why is (A) not correct? What is the argument? The argument is this: Leaks will be prevented so the oil pipeline will not cause pollution. The argument focuses on the possible pollution caused by the oil pipeline in future, not any other source. The argument also doesn't say that the Lake will not be polluted through some other source. It narrowly focuses only on the pipeline. Hence (A) is not an assumption. It is out of scope for our argument. The argument only says that oil pipeline will not cause pollution. It doesn't say nothing else will cause pollution. _________________ Karishma Veritas Prep | GMAT Instructor My Blog Get started with Veritas Prep GMAT On Demand for$199

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04 May 2009, 01:08
priyankur_saha@ml.com wrote:
Early in the twentieth century, Lake Konfa became very polluted. Recently fish populations have recovered as release of industrial pollutants has declined and the lak waters have become cleaner. Fears are now being voiced that the planned construction of an oil pipeline across the lake’s bottom might revive pollution and cause the fish population to decline again. However, a technology for preventing leaks is being installed. Therefore, provided this technology is effective, those fears are groundless.
The argument depends on assuming which of the following?
A. Apart from development related to the pipeline, there will be no new industria development around the lake that will create renewed pollution in its waters.
B. Other than the possibility of a leak, there is no realistic pollution threat posed to the lake by the pipeline’s construction.
C. There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.
D. Damage to the lake’s fish populations would be the only harm that a leak of oil from the pipeline would cause.
E. The species of fish that are present in Lake Konfa now are the same as those that were in the lake before it was affected by pollution.

My pick is B. I do not have OA. Please post OA if you have.

C is the best

If there is reason to believe, the fears are ground
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04 May 2009, 01:54
I will also go with B. The conclusion is already conditional "provided this technology is effective....". Hence, C does not do any value add.
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04 May 2009, 14:34
B, imo

argument assumes that there is no other source of pollution other than the leaks and thats what B says
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04 May 2009, 14:41
I would go with B.
I used Assumption negation technique and find out both B and C are attractive. however B looks more attractive to me as B fills the gap
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04 May 2009, 15:30
B for me
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05 May 2009, 10:44
C for me.
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05 May 2009, 20:40
Second look, Agree B is the best. C is misleading
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05 May 2009, 20:57
agree with B.
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06 May 2009, 10:47
Good catch. Thanks. Atleast i'm consistent

x2suresh wrote:
bigfernheard,

You are consistenent in choosing the Answer, but unfortunately both are incorrect.

Option C in the original question (Priyankumar posted) and Optiion B ( in GMAT PREP posted by you) are same. Both are wrong.

here B is the correct answer.

Option C --> in GMATPRE is totall differrent, and agree with that answer.
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Re: Early in the twentieth century, Lake Konfa became very [#permalink]

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08 Sep 2009, 11:53
But...although remnant pollution were stirred to the water...the technology could prevent any danger, could not?
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29 Dec 2010, 12:07
noboru wrote:
But...although remnant pollution were stirred to the water...the technology could prevent any danger, could not?

nobody is going to clarify this?
thanks
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29 Dec 2010, 12:29
+1 B

Thanks!
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29 Dec 2010, 13:18
metallicafan wrote:
+1 B

Thanks!

Sorry, I have read it again and my question does not make sense at all. I thought that any pollution could be removed by the technology but the technology only works for preventing leaks, so B is the answer.

Thanks!
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07 Aug 2011, 00:00
Why is A opted out , how does one know that industrail development effects are not being taken into consideration here ??
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Re: Early in the twentieth century, Lake Konfa became very   [#permalink] 07 Aug 2011, 00:00

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