A drug that is highly effective in treating many types of

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A drug that is highly effective in treating many types of [#permalink]

13 Mar 2011, 19:48

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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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Re: bark of the ibora tree [#permalink]

13 Mar 2011, 21:02

answer should be D. If the tree is inaccessible, it means that the drug would be not produced. however, that is not an option. the question clearly states- continued production of the drug as a given, and the assumption is that it will lead to extinction of the tree. that has to be challenged, and the fact that ibora can grow from cutting and under cultivation means that even if the drug continues to be produced, more and more Ibora trees can be grown.

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Re: bark of the ibora tree [#permalink]

14 Mar 2011, 13:34

vivesomnium wrote:

i too chose D as it says we have a way to grow the ibore.
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Re: bark of the ibora tree [#permalink]

14 Mar 2011, 21:21

I also choose "D".
Please refer to http://www.manhattangmat.com/forums/a-d ... t3788.html for the correct answer.It is D.

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Re: bark of the ibora tree [#permalink]

15 Mar 2011, 20:28

Thanks...guess my source of answer is incorrect...

Re: bark of the ibora tree [#permalink] 15 Mar 2011, 20:28

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