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

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Director
Joined: 20 Apr 2005
Posts: 584

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

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29 Apr 2005, 16:46
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1. 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 iboraâ€™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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Senior Manager
Joined: 15 Mar 2005
Posts: 418

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Location: Phoenix

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29 Apr 2005, 16:57
I'd go with D. That's coz we are looking for a reason that Ibora would not go extinct. And the stmt D says exactly that - that Ibora can be culticated and propagated.

Rest all are peripheral or unrelated.
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Who says elephants can't dance?

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Current Student
Joined: 29 Jan 2005
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30 Apr 2005, 05:04
D explains how to replenish the tree and keep it from extinction.

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Director
Joined: 20 Apr 2005
Posts: 584

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30 Apr 2005, 10:55
The OA is E, though I agree whole-heartedly with the explanations behind D. I think this is one of the rare instances where OA is wrong.

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