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# People who live unusually long tend to have been lean young

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Manager
Joined: 11 Nov 2004
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People who live unusually long tend to have been lean young [#permalink]

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09 Jan 2005, 19:22
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People who live unusually long tend to have been lean young adults who went on to gain approximately one pound every year, so lean young adults can improve their chances of living a long life by gaining about a pound every year.
A flaw in the argument above is that it

(A) gives reasons for the truth of its conclusion that presuppose the truth of that conclusion
(B) proceeds as though a condition that by itself is enough to guarantee a certain result must always be present for that result to be achieved
(C) assumes without proof that two phenomena that occur together share an underlying cause
(D) concludes that one phenomenon is the cause of another when at most what has been established is an association between them
(E) fails to recognize that a tendency widely shared by a subgroup within a given population will not necessarily be widely shared by that population as a whole

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Intern
Joined: 24 Sep 2003
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Location: India

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10 Jan 2005, 03:32
I believe that OA should be 'C'.
_________________

Vipin Gupta

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Manager
Joined: 06 Sep 2004
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10 Jan 2005, 04:57
I will do with D.

"concludes that one phenomenon is the cause of another when at most what has been established is an association between them":

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Manager
Joined: 02 Dec 2004
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10 Jan 2005, 09:22
my choice is D and this one is a pure correlation play. Boy, can anyone explain what choice B is trying to say

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Manager
Joined: 11 Nov 2004
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10 Jan 2005, 10:01

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Director
Joined: 03 Nov 2004
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10 Jan 2005, 11:05
Janice, The argument says that "lean young adults can improve their chances of living a long life by gaining about a pound every year" - this statement says that it only improves their chances of living a long life, it does not say for certain that they will live a long life, so it does take into account that a tendency shared by a given subgroup of population will not be shared by the population as a whole.

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Manager
Joined: 02 Dec 2004
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10 Jan 2005, 11:36
Janice, The argument says that "lean young adults can improve their chances of living a long life by gaining about a pound every year" - this statement says that it only improves their chances of living a long life, it does not say for certain that they will live a long life, so it does take into account that a tendency shared by a given subgroup of population will not be shared by the population as a whole.

nice explanation with details

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Director
Joined: 14 Jul 2004
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11 Sep 2005, 19:11
What is wrong with AC B? Any legit explanations on whats wrong with B?

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Senior Manager
Joined: 16 Jul 2005
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11 Sep 2005, 21:02
I think it's D...

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11 Sep 2005, 21:02
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