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01 Oct 2019, 23:02
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
32% (01:49) correct
68%
(01:50)
wrong
based on 188
sessions
History
Date
Time
Result
Not Attempted Yet
Unless new reserves are found soon, the world's supply of coal is being depleted in such a way that with demand continuing to grow at present rates, reserves will be exhausted by the year 2050.
Which of the following, if true, will most weaken the above argument?
(A) There has been a slowdown in the rate of increase in world demand for coal over the last 5 years from 10% to 5%.
(B) It has been known for many years that there are vast stocks of coal under Antarctica which have yet to be economically exploited.
(C) Oil is being used increasingly in place of coal for many industrial and domestic uses.
(D) As coal resources are depleted more and more marginal supplies, which are more costly to produce and less efficient in use are being mined.
(E) None of the above.
Which of the following, if true, will most weaken the above argument?
(A) There has been a slowdown in the rate of increase in world demand for coal over the last 5 years from 10% to 5%.
(B) It has been known for many years that there are vast stocks of coal under Antarctica which have yet to be economically exploited.
(C) Oil is being used increasingly in place of coal for many industrial and domestic uses.
(D) As coal resources are depleted more and more marginal supplies, which are more costly to produce and less efficient in use are being mined.
(E) None of the above.
08 Oct 2019, 08:18
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I am confused between E and B. I opted for B because it is explaining that there are reserves which is not noticed. But I am guessing it is wrong because we do not know if we can exploit it commercialy. So, that could be a reason and other than that all the other options seemed far along.
omadangopal123
Joined: 22 Mar 2018
Last visit: 12 Jul 2020
Posts: 7
Given Kudos: 39
Location: India
Concentration: International Business, Finance
Schools: ISB '20 (D) Wharton '22
GMAT 1: 590 Q47 V24
GPA: 3.69
WE:Web Development (Computer Software)
08 Oct 2019, 09:23
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I opted E as i don't see rest of the options are weakening what author wants us to believe i.e., Without new resources, reserves will be exhausted by 2050.
Kindly correct me if my above derived conclusion is wrong.
So based on above conclusion:
Option A: It talks about rate of increase in demand in last 5 years. As we are not sure about the timeline of the argument and also uncertain that this trend of decrease in rate would continue till 2050, I couldn't say if this is weakening or strengthening the conclusion.
Option B: Though conclusion talks about new reserves and this option also brings in a new unidentified reserve, I still couldn't say that this would last till 2050, as it is uncertain on how much of this reserves would meet the growing demand mentioned in argument.
Option C: This brought a new resource "Oil" as replacement to Coal. As we are uncertain on sector in which the demand is growing additionally as there is no context set on specific area of coal's usage it is hard to decide on this statement.
Option D: This option talks about other supplies which are costly and less efficient to produce. This makes it even harder to produces coal to meet demand and I think this statement supports conclusion.
Option E: No other option seems to weaken the conclusion so, None of the Above.
Kindly correct me if I missed anything.
Kindly correct me if my above derived conclusion is wrong.
So based on above conclusion:
Option A: It talks about rate of increase in demand in last 5 years. As we are not sure about the timeline of the argument and also uncertain that this trend of decrease in rate would continue till 2050, I couldn't say if this is weakening or strengthening the conclusion.
Option B: Though conclusion talks about new reserves and this option also brings in a new unidentified reserve, I still couldn't say that this would last till 2050, as it is uncertain on how much of this reserves would meet the growing demand mentioned in argument.
Option C: This brought a new resource "Oil" as replacement to Coal. As we are uncertain on sector in which the demand is growing additionally as there is no context set on specific area of coal's usage it is hard to decide on this statement.
Option D: This option talks about other supplies which are costly and less efficient to produce. This makes it even harder to produces coal to meet demand and I think this statement supports conclusion.
Option E: No other option seems to weaken the conclusion so, None of the Above.
Kindly correct me if I missed anything.
