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Global ecological problems reduce to the problem of balancing supply a

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Global ecological problems reduce to the problem of balancing supply a  [#permalink]

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New post 10 Mar 2019, 09:32
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A
B
C
D
E

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  35% (medium)

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68% (01:45) correct 32% (02:07) wrong based on 87 sessions

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Global ecological problems reduce to the problem of balancing supply and demand. Supply is strictly confined by the earth’s limitations. Demand, however, is essentially unlimited, as there are no limits on the potential demands made by humans. The natural tendency for there to be an imbalance between demand and sustainable supply is the source of these global problems. Therefore, any solutions require reducing current human demand.

Which one of the following is an assumption on which the argument depends?

(A) Supply and demand tend to balance themselves in the long run.
(B) It is possible to determine the limitations of the earth’s sustainable supply.
(C) Actual human demand exceeds the earth’s sustainable supply.
(D) It is never possible to achieve a balance between the environmental supply and human demand.
(E) Human consumption does not decrease the environmental supply.

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Re: Global ecological problems reduce to the problem of balancing supply a  [#permalink]

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New post 10 Mar 2019, 10:56
IMO C. Because the conclusion is that in order to maintain a balance (i.e., any solutions) require reducing current human demand. This implicitly states that current human demand exceeds the earth’s sustainable supply.

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Re: Global ecological problems reduce to the problem of balancing supply a  [#permalink]

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New post 10 Mar 2019, 11:35
Imo answer should be E.

The conclusion is that solution should REQUIRE lowering human demands.

Negating Option E tells that consumption actually reduces supply .. so we have a problem at supply itself. Because even if we reduce demands the balance won't come through

Option C just repeats already what is mentioned in the argument.

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Re: Global ecological problems reduce to the problem of balancing supply a  [#permalink]

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New post 10 Mar 2019, 17:01
I think it is B. In order to reduce demand, you would have first to know what the current earth supply is. Therefore, it should be "possible to determine the limitations of the earth’s sustainable supply". (B)
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Global ecological problems reduce to the problem of balancing supply a  [#permalink]

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New post Updated on: 10 Mar 2019, 18:25
IMO C.

What is important here is to notice the difference between "potential demand" and "Actual demand".
C fills out the crack.

Originally posted by rickysinghk11 on 10 Mar 2019, 17:53.
Last edited by rickysinghk11 on 10 Mar 2019, 18:25, edited 1 time in total.
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Global ecological problems reduce to the problem of balancing supply a   [#permalink] 10 Mar 2019, 17:53
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