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705-805 Level|   Weaken|         
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nightblade354
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can be done by POE. Except E, all other are irrelevant or out of scope.
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nightblade354
When the supply of a given resource dwindles, alternative technologies allowing the use of different resources develop, and demand for the resource that was in short supply naturally declines. Then the existing supplies of that resource satisfy whatever demand remains. Among the once-dwindling resources that are now in more than adequate supply are flint for arrowheads, trees usable for schooner masts, and good mules. Because new technologies constantly replace old ones, we can never run out of important natural resources.

Which one of the following, if true, most seriously undermines the conclusion?

(A) The masts and hulls of some sailing ships built today are still made of wood
(B) There are considerably fewer mules today than there were 100 years ago
(C) The cost of some new technologies is often so high that the companies developing them might actually lose money at first
(D) Dwindling supplies of a natural resource often result in that resource’s costing more to use
(E) The biological requirements for substances like clean air and clean water are unaffected by technological change

Our objective must be to attack the highlighted part of the Stimulus, none but (E) does that correctly as " clean air and clean water " are important natural resources for our Biological needs that can never be replaced...

Thus, Answer must be (E)


Hi Abhishek009,

Is D incorrect because there was no mention about costs in the stimulus?
and why mention biological requirements if there is no mention of ones in the stimulus, just technological side? Furthermore, it is easy to assume, without mentioning biological requirements, that such natural resources as air and water are irreplaceable, as they are naturally required for human's survival, a common knowledge even in the GMAT field (I think to compare what's given in the stimulus with so needed air and water is inappropriate)
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Thought this was a pretty **** question.
Didn't select E, but thought it would be the answer (none of the other answers felt right).
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When the supply of a given resource dwindles, alternative technologies allowing the use of different resources develop, and demand for the resource that was in short supply naturally declines. Then the existing supplies of that resource satisfy whatever demand remains. Among the once-dwindling resources that are now in more than adequate supply are flint for arrowheads, trees usable for schooner masts, and good mules. Because new technologies constantly replace old ones, we can never run out of important natural resources.

Which one of the following, if true, most seriously undermines the conclusion?

(A) The masts and hulls of some sailing ships built today are still made of wood
(B) There are considerably fewer mules today than there were 100 years ago
(C) The cost of some new technologies is often so high that the companies developing them might actually lose money at first
(D) Dwindling supplies of a natural resource often result in that resource’s costing more to use
(E) The biological requirements for substances like clean air and clean water are unaffected by technological change

(E) The biological requirements for substances like clean air and clean water are unaffected by technological change
"Substances like clean air and clean water" mentioned in (E) must be IMPORTANT natural resources because they are "BIOLOGICAL requirements" - we need them biologically. The argument is essentially about that resources can be replaced by new technologies that allow us to use DIFFERENT resources that serve the same function of the old resources. (E) tells us that our BIOLOGICAL REQUIREMENTS for SPECIFIC resources like clean air and clean water ARE UNAFFECTED by technological change: technologies can not replace substances like clean air and clean water by something else because they are the VERY THINGS biologically required by us and unaffected by technological change.
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