Although wood-burning stoves are more efficient than open : GMAT Critical Reasoning (CR)
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# Although wood-burning stoves are more efficient than open

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Although wood-burning stoves are more efficient than open [#permalink]

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27 May 2008, 04:36
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25. Although wood-burning stoves are more efficient than open fireplaces, they are also more dangerous. The smoke that wood-burning stoves release up the chimney is cooler than the smoke from an open flame. Thus it travels more slowly and deposits more creosote, a flammable substance that can clog a chimney—or worse, ignite inside it.
Which one of the following, if true, most seriously weakens the augment?
(A) The most efficient wood-burning stoves produce less creosote than do many open fireplaces.
(B) The amount of creosote produced depends not only on the type of flame but on how often the stove or fireplace is used.
(C) Open fireplaces pose more risk of severe accidents inside the home than do wood-burning stoves.
(D) Open fireplaces also produce a large amount of creosote residue.
(E) Homeowners in warm climates rarely use fireplaces or wood-burning stoves.
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Re: CR Question [#permalink]

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27 May 2008, 04:46
C.

I tried to put my reasoning here since this was quite challenging and I couldn't just get the answer on first read.

Good question.

vdhawan1 wrote:
25. Although wood-burning stoves are more efficient than open fireplaces, they are also more dangerous [conclusion]. The smoke that wood-burning stoves release up the chimney is cooler than the smoke from an open flame. Thus it travels more slowly and deposits more creosote, a flammable substance that can clog a chimney—or worse, ignite inside it.
Which one of the following, if true, most seriously weakens the augment?
(A) The most efficient wood-burning stoves produce less creosote than do many open fireplaces. <-- yeah, but most efficient may not be in widespread use
(B) The amount of creosote produced depends not only on the type of flame but on how often the stove or fireplace is used. <-- nothing in the argument compares the amount of usage so neither should we.
(C) Open fireplaces pose more risk of severe accidents inside the home than do wood-burning stoves. <-- by POE this seems like the answer
(D) Open fireplaces also produce a large amount of creosote residue. <-- perhaps , but do they get deposited ? and do they pose flammable threat ?
(E) Homeowners in warm climates rarely use fireplaces or wood-burning stoves. <-- irrelevant.
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Re: CR Question [#permalink]

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27 May 2008, 17:45
vdhawan1 wrote:
25. Although wood-burning stoves are more efficient than open fireplaces, they are also more dangerous. The smoke that wood-burning stoves release up the chimney is cooler than the smoke from an open flame. Thus it travels more slowly and deposits more creosote, a flammable substance that can clog a chimney—or worse, ignite inside it.
Which one of the following, if true, most seriously weakens the augment?
(A) The most efficient wood-burning stoves produce less creosote than do many open fireplaces.
(B) The amount of creosote produced depends not only on the type of flame but on how often the stove or fireplace is used.
(C) Open fireplaces pose more risk of severe accidents inside the home than do wood-burning stoves.
(D) Open fireplaces also produce a large amount of creosote residue.
(E) Homeowners in warm climates rarely use fireplaces or wood-burning stoves.

B for me!
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Re: CR Question [#permalink]

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27 May 2008, 18:10
Toss between B and C.
I am going for C as B seems to introduce a new factor ( the frequency of use ) which I think is not necessary here.
Re: CR Question   [#permalink] 27 May 2008, 18:10
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# Although wood-burning stoves are more efficient than open

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