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# CR Revision: In response to the increasing cost of producing energy

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CR Revision: In response to the increasing cost of producing energy  [#permalink]

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08 Feb 2016, 03:31
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55% (hard)

Question Stats:

64% (02:20) correct 36% (01:36) wrong based on 360 sessions

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In response to the increasing cost of producing energy through traditional means, such as combustion, many utility companies have begun investing in renewable energy sources, chiefly wind and solar power, hoping someday to rely on them completely and thus lower energy costs. The utility companies claim that although these sources require significant initial capital investment, they will provide stable energy supplies at low cost. As a result, these sources will be less risky for the utilities than nonrenewable sources, such as gas, oil, and coal, whose prices can fluctuate dramatically according to availability.

The claim of the utility companies presupposes which of the following?

A. The public will embrace the development of wind and solar power.

B. No new deposits of gas, oil, and coal will be discovered in the near future.

C. Weather patterns are consistent and predictable.

D. The necessary technology for conversion to wind and solar power is not more expensive than the technology needed to create energy through combustion.

E. Obtaining energy from nonrenewable sources, such as gas, oil and coal, cannot be made less risky.

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Re: CR Revision: In response to the increasing cost of producing energy  [#permalink]

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08 Feb 2016, 07:05
Tricky one... Between B and C I would pick C...

B. No new deposits of gas, oil, and coal will be discovered in the near future. Even if this happen, the costs can still fluctuate...

OA plz..
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Re: CR Revision: In response to the increasing cost of producing energy  [#permalink]

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10 Feb 2016, 21:22
souvik101990 wrote:
In response to the increasing cost of producing energy through traditional means, such as combustion, many utility companies have begun investing in renewable energy sources, chiefly wind and solar power, hoping someday to rely on them completely and thus lower energy costs. The utility companies claim that although these sources require significant initial capital investment, they will provide stable energy supplies at low cost. As a result, these sources will be less risky for the utilities than nonrenewable sources, such as gas, oil, and coal, whose prices can fluctuate dramatically according to availability. The claim of the utility companies presupposes which of the following?

A. The public will embrace the development of wind and solar power.

B. No new deposits of gas, oil, and coal will be discovered in the near future.

C. Weather patterns are consistent and predictable.

D. The necessary technology for conversion to wind and solar power is not more expensive than the technology needed to create energy through combustion.

E. Obtaining energy from nonrenewable sources, such as gas, oil and coal, cannot be made less risky.

A, D, and E are easily out.

A - Not relevant to the claim
D - The utility company have already considered the cost implications. Redundant.
E - Same as A. Does not answer Why renewable energy

Among B and C, B is eliminated because here too it does not speak about renewable energy.

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CR Revision: In response to the increasing cost of producing energy  [#permalink]

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29 Jan 2017, 05:47
1
The conclusion of the argument is that renewable sources of energy, chiefly solar and wind, will be less risky for certain utilities than nonrenewable sources, such as oil and gas. The basis for this claim is that the renewable sources will provide stable, low-cost supplies of energy, whereas the prices for nonrenewable sources will fluctuate according to availability. We are asked to find an assumption underlying this argument. In order for this argument to be valid, it must in fact be true that these renewable sources of energy will provide stable, low-cost supplies.

(A) The utility companies' claim has to do with the supply risk of the new energy sources, not with how these sources are received by the public.

(B) If no new supplies of traditional energy sources are found, then it is true that perhaps these nonrenewable supplies will continue to fluctuate in price in a risky manner. However, the argument does not depend upon any assumption about the future discovery of oil and gas supplies.

(C) CORRECT. If we assume that weather patterns are consistent and predictable, then with the stated premises, we can conclude that solar and wind power will be less risky than oil and gas. If, on the other hand, weather patterns are not consistent and predictable, then solar and wind power are not reliable and thus will not provide "stable energy supplies at low cost." Thus, the argument's conclusion directly depends on this assumption.

(D) To reach the required conclusion, it is not necessary to assume that the conversion technology for new sources is not more expensive than the present technology.

(E) This choice does not directly affect the argument. Whether or not energy produced through combustion can be made less risky, the new energy sources might still be less risky than the older sources.
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Re: CR Revision: In response to the increasing cost of producing energy  [#permalink]

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07 May 2017, 10:38
1
Here is additional explanation for C:
I initially thought that it was wrong because companies might still be able to have reliable supply of energy from renewable sources even though the sources are unstable. If this was the case, situation described in C would be of no importance. However, we are given a clue that reliability of energy source matters for the supply of electricity:
Quote:
As a result, these sources will be less risky for the utilities than nonrenewable sources, such as gas, oil, and coal, whose prices can fluctuate dramatically according to availability.

If it is the case for energy made from non-renewable sources, it should also be the case for energy gained from renewable sources.
Re: CR Revision: In response to the increasing cost of producing energy &nbs [#permalink] 07 May 2017, 10:38
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