Emissions from automobiles that burn gasoline and : GMAT Critical Reasoning (CR)
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# Emissions from automobiles that burn gasoline and

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Director
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Emissions from automobiles that burn gasoline and [#permalink]

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20 Jul 2007, 02:02
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Emissions from automobiles that burn gasoline and
automobiles that burn diesel fuel are threatening the
quality of life on our planet, contaminating both
urban air and global atmosphere. Therefore, the only
effective way to reduce such emissions is to replace
the conventional diesel fuel and gasoline used in
automobiles with cleaner-burning fuels, such as
methanol, that create fewer emissions.
Which one of the following is an assumption on
which the argument depends?

(A) Reducing the use of automobiles would not
be a more effective means to reduce
automobile emissions than the use of
methanol.
(B) There is no fuel other than methanol that is
cleaner-burning than both diesel fuel and
gasoline.
(C) If given a choice of automobile fuels,
automobile owners would not select
gasoline over methanol.
(D) Automobile emissions constitute the most
serious threat to the global environment.
(E) At any given time there is a direct correlation
between the level of urban air pollution and
the level of contamination present in the
global atmosphere.

Interesting...OA later...
If you have any questions
New!
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20 Jul 2007, 06:32
Well, B and C are definitely out.
That left with A, D and E.
Well, D seems like stated in the passage, therefore not assumption.
E, I am not sure if there is a correlation.
I will probably go with A.
Director
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20 Jul 2007, 06:53
I'd go for E as well. The argument states that "the only
effective way to reduce such emissions is to replace.."
So if the assumption is that there aren't any other ways to reduce emissions.
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20 Jul 2007, 07:53
I go afor A.
Use the deny test and the argument falls.
conclusion: We need another fuel.
A says that use cannot be lessened. It the automob. use can be lessened and thus decreased emissions, then we do not need to change fuels.

God please get e right. I want 800.
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20 Jul 2007, 12:09
A
Intern
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20 Jul 2007, 12:48
A - the argument says that "the only
effective way to reduce such emissions is to replace
the conventional diesel fuel and gasoline used in
automobiles with cleaner-burning fuels" that means the author has to assume that there is no other effective way
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20 Jul 2007, 13:36
I like A. I had to choose between A and B
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20 Jul 2007, 14:29
Only A makes sense.
Director
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21 Jul 2007, 02:06
Thanks guys, OA is 'A'.
Director
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21 Jul 2007, 08:36
A is the best....
However E also sounds like an assumption.
Any thought?

-Brajesh
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21 Jul 2007, 11:12
b14kumar wrote:
A is the best....
However E also sounds like an assumption.
Any thought?

-Brajesh

The conclusion is about an effective way to reduce emissions...so correlation is irrelevant.
21 Jul 2007, 11:12
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