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Early in the twentieth century, Lake Konfa became very polluted. Recen

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Early in the twentieth century, Lake Konfa became very polluted. Recen [#permalink] New post   17 Sep 2022, 00:29
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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 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.

(B) There is no reason to believe that the leak-preventing technology would be ineffective when installed in the pipeline in Lake Konfa.

(C) The bottom of the lake does not contain toxic remnants of earlier pollution that will be stirred into water by pipeline construction.

(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.

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Re: Early in the twentieth century, Lake Konfa became very polluted. Recen [#permalink] New post   21 Sep 2022, 03:44
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- People are against constructing an oil pipeline across the lake’s bottom because of potential leaks
- We’re told that new technology will prevent leaks from occurring.
- Conclusion: If effective, people don’t need to worry about leaks anymore.

A – This is not a necessary assumption. We’re discussing the impact of an oil pipeline, not other industrial development and its impact. Out of scope.

B – This is not a necessary assumption. We’re told that those fears are groundless IF the technology is effective. So this is already stated.

C – CORRECT. If the bottom of the lake does contain toxic remnants, then those fears are certainly not groundless.

D – Not necessary. The leak can harm other things as well.

E – Irrelevant.
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Re: Early in the twentieth century, Lake Konfa became very polluted. Recen [#permalink]
21 Sep 2022, 03:44
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