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A drug that is highly effective in treating many types of [#permalink]
13 Mar 2006, 20:38
100% (01:55) correct
0% (00:00) wrong based on 13 sessions
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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 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.
(A) irrelevant (B) irrelevant (C) irrelevant (D) The ibora can be propagated from cuttings and grown under cultivation. (E) irrelevant
D is the best choice. If it can be grown under cultivation, then there is no danger of extinction
D is not clear here. As it can be propagated or can not be propagated we should not assume in such types of questions.
I chose D but OA is E. Question is from 1000 CR list. I am still confused between D and E.
I think D and E both hurts the conclusion, but we need to pick the one that most seriously weakens the argument.
After reading the replies in this thread, choice E does seem to be stronger. If the most of the trees are inaccessible, then there is no way to reach these trees and thus extinction is almost not possible.
As for D, which I picked as my choice, there is a possibility that the Ibora tree may or may not be cultured, and even though there are cultured ones, wild ibora trees still have a possibility of extinction if they are continued to be used for production of the drug.
I suppose D leaves room for doubt, while E does not.
A â€“ The mechanism of distribution of the drug is not the authorâ€™s topic. Out of scope.
B â€“ Nothing is mentioned about price or customerâ€™s price sensitivity. Irrelevant.
C â€“ Irrelevant. Out of scope.
D â€“ Conclusion is that the tree will become extinct because of continued production. This option points at that needs not be the case. Correct answer.
E â€“ Accessibility of the tree is not at issue here. Out of scope.