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A drug that is highly effective in treating many types of [#permalink]
 04 Oct 2008, 20:23
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A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction.
Which of the following, if true, most seriously weakens the argument above?
(A) The drug made from ibora bark is dispensed to doctors from a central authority.
(B) The drug made from ibora bark is expensive to produce.
(C) The leaves of the ibora are used in a number of medical products.
(D) The ibora can be propagated from cuttings and grown under cultivation.
(E) The ibora generally grows in largely inaccessible places.
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Conclusion : It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction.
Which options gives an answer that will prove that the ibora will not vanish.
(A) The drug made from ibora bark is dispensed to doctors from a central authority. - Irrlevant
(B) The drug made from ibora bark is expensive to produce. Irrlevant
(C) The leaves of the ibora are used in a number of medical products.Irrlevant
(D) The ibora can be propagated from cuttings and grown under cultivation. If it can be propagated by any means that it will not valish... CORRECT rrlevant
(E) The ibora generally grows in largely inaccessible places. Irrlevant
IMO : D
OA please ?
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Richardson wrote: A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction.
Which of the following, if true, most seriously weakens the argument above?
(A) The drug made from ibora bark is dispensed to doctors from a central authority. -> irrelevant
(B) The drug made from ibora bark is expensive to produce. -> OOS
(C) The leaves of the ibora are used in a number of medical products. -> this is OOS
(D) The ibora can be propagated from cuttings and grown under cultivation.
(E) The ibora generally grows in largely inaccessible places. -> how does it help in weakening the concl CONCL : It follows, therefore, that continued production of the drug must inevitably lead to the ibora’s extinction. To weaken above we need to have some evidence that ibora can be restored in its numbers !!! Clearly D does this !!!IMO D
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Manager
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I chose D as well. But OA is not D. I wonder...
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Manager
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I guess the OG 10 question and given ans there is D
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SVP
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E for me.
the conclusion explains the causal relationship. Thus, if cause does not occur, effect will not occur. Since, ibora generally grows in largely inaccessible places, there is no way it will go extinct.
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Manager
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D for me. E is not relevant. Even if the ibora grows in inaccesible places, the producers of the drug will spend money to obtain it if they will have a profit from the sale of the drug.
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Manager
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arorag wrote: I guess the OG 10 question and given ans there is D The OA given is E. Can anybody reconfirm this??? THx.
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(E) for me. If the tree ibora generally grows in largely inaccessible places, there is no way of accessing it for medicinal use. Hence, it cannot become extinct. (D) is very close.......trickcy... 
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