CR - Clean Air Act ten years ago : GMAT Critical Reasoning (CR)
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# CR - Clean Air Act ten years ago

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CR - Clean Air Act ten years ago [#permalink]

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15 Mar 2010, 14:31
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Since the passage of the state’s Clean Air Act ten years ago, the level of industrial pollutants in the air has fallen by an average of 18 percent. This suggests that the restrictions on industry embodied in the act have worked effectively. However, during the same period the state has also suffered through a period of economic decline. The number of businesses in the state has fallen by 10 percent, and the number of workers employed has fallen by 12 percent. It is probable that the business decline, rather than the regulations in the act, is responsible for at least half of the decline in the pollution.

12. Which of following is an assumption made in the passage above?

(A) Most businesses in the state have obeyed the regulations embodied in the Clean Air Act.
(B) The economic decline of the state can be attributed, in part, to the effects of the Clean Air Act.
(C) The amount of air pollution in a given area is likely to be proportional to the number of businesses and workers active in that area.
(D) The restrictions on business activity in other states are less stringent than are those embodied in the Clean Air Act.
(E) The Clean Air Act has been only very slightly successful in achieving the goal of reduced air pollution
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Re: CR - Clean Air Act ten years ago [#permalink]

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15 Mar 2010, 20:06
seekmba wrote:

Since the passage of the state’s Clean Air Act ten years ago, the level of industrial pollutants in the air has fallen by an average of 18 percent. This suggests that the restrictions on industry embodied in the act have worked effectively. However, during the same period the state has also suffered through a period of economic decline. The number of businesses in the state has fallen by 10 percent, and the number of workers employed has fallen by 12 percent. It is probable that the business decline, rather than the regulations in the act, is responsible for at least half of the decline in the pollution.

12. Which of following is an assumption made in the passage above?

(A) Most businesses in the state have obeyed the regulations embodied in the Clean Air Act.
(B) The economic decline of the state can be attributed, in part, to the effects of the Clean Air Act.
(C) The amount of air pollution in a given area is likely to be proportional to the number of businesses and workers active in that area.
(D) The restrictions on business activity in other states are less stringent than are those embodied in the Clean Air Act.
(E) The Clean Air Act has been only very slightly successful in achieving the goal of reduced air pollution

C.

The author says It is probable that the business decline, rather than the regulations in the act, is responsible for at least half of the decline in the pollution, so he is assuming that business decline and pollution are realted
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Re: CR - Clean Air Act ten years ago [#permalink]

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15 Mar 2010, 20:55

Conclusion - "It is probable that the business decline, rather than the regulations in the act, is responsible for at least half of the decline in the pollution."

Evidence - Since the passage of the state’s Clean Air Act ten years ago, the level of industrial pollutants in the air has fallen by an average of 18 percent... The number of businesses in the state has fallen by 10 percent, and the number of workers employed has fallen by 12 percent

Hence, it is assumed that decline in no. of businesses is related to the deline in pollution.
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Re: CR - Clean Air Act ten years ago [#permalink]

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16 Mar 2010, 08:00
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Re: CR - Clean Air Act ten years ago [#permalink]

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28 Mar 2010, 18:33
This question is easy Answer is C
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Re: CR - Clean Air Act ten years ago [#permalink]

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06 Apr 2010, 06:54
Not A, because even if a few have obeyed the law, and those are the biggest polluters (including closed businesses), you could still conclude the same.

Not B, because it reverses that cause and effect mentioned in the premise.

C, because if it is not proportional to polluting activities (industry & employees), you cannot draw a conclusion linking less pollution to less activity.

Not D, because other states are out of scope here.

Not E, because even if the act was a little more successful, you could still conclude (with more confidence) that most of the reduction came from closures.
Re: CR - Clean Air Act ten years ago   [#permalink] 06 Apr 2010, 06:54
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