Wood smoke contains dangerous toxins that cause changes in : GMAT Critical Reasoning (CR)
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Wood smoke contains dangerous toxins that cause changes in

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Wood smoke contains dangerous toxins that cause changes in [#permalink]

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16 May 2007, 11:49
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Wood smoke contains dangerous toxins that cause changes in human cells. Because woodsmoke presents such a high health risk, legislation is needed to regulate the use of open-air fires and wood-burning stoves.

Which of the following, if true, provides the most support for the argument above?

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust.

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves.

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.

OG11
[Reveal] Spoiler: OA
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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28 Jun 2012, 13:10
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All the correct answer has to do is say the following: woodsmoke is dangerous. If an answer choice doesn't say this, we eliminate it.

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust.

This suggests that woodsmoke is not dangerous.

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.

Shows that the legislation would be irrelevant. Does not talk about the dangers of woodsmoke.

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves.

This answer choice does not back up the idea that woodsmoke is harmful.

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.

Shows that the legislation would not have any effect.

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.

While not the strongest answer, 'poor air quality' suggests that the woodsmoke is making the air harmful to breathe. Do not worry about the fact that it is in a valley. Any place in which woodsmoke causes the air quality to become poor, suggests that woodsmoke is harmful everywhere.

Hope that helps .
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16 May 2007, 11:53
I would go with E
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16 May 2007, 14:41
another E
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16 May 2007, 15:43
E by elimination.
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17 May 2007, 13:03
E
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Re: CR - wood smoke [#permalink]

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17 May 2007, 16:53
Caas wrote:
Wood smoke contains dangerous toxins that cause changes in human cells. Because woodsmoke presents such a high health risk, legislation is needed to regulate the use of open-air fires and wood-burning stoves.

Which of the following, if true, provides the most support for the argument above?

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust.

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves.

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.

OG11

Easy E
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17 May 2007, 17:34
Ya E
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17 May 2007, 18:12
(A) Irrelevant

(B) Weakens the argument

(C) Irrelevant

(D) Weakens the argument

(E) Yup...here it is!

Give me E!
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17 May 2007, 23:52
kripalkavi wrote:
(A) Irrelevant

(B) Weakens the argument

(C) Irrelevant

(D) Weakens the argument

(E) Yup...here it is!

Give me E!

yes! (E)
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18 May 2007, 13:04
Fine! You all are right
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07 Jul 2007, 12:16
I understand E is the OA and may be the only one close but how does what happens in 'valleys' has anything to do with the stem/question?
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Re: CR - wood smoke [#permalink]

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06 Aug 2011, 04:24
the stem says "legislation is needed to regulate the use of open-air fires and wood-burning stoves". Option says "In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality". Legislation is a way to control the use of wood as a fuel in the valleys.
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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28 Jun 2012, 06:12
Wood is always been a good source of making decoration equipment, It is been used from so many decades. There are also some wonderful wood sculptures which has always been a thing of amaze.
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28 Jun 2012, 07:41
asaf wrote:
I understand E is the OA and may be the only one close but how does what happens in 'valleys' has anything to do with the stem/question?

Agree ..
valley has nothing to do with health of human being in the first go.

IMO E
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28 Jun 2012, 07:55
asaf wrote:
I understand E is the OA and may be the only one close but how does what happens in 'valleys' has anything to do with the stem/question?

Remember, in a weaken/strengthen type of question, you take the answer choices as true.
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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28 Jun 2012, 20:04
IMO E... plain simple question...
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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17 Apr 2014, 09:50
Caas wrote:
Wood smoke contains dangerous toxins that cause changes in human cells. Because woodsmoke presents such a high health risk, legislation is needed to regulate the use of open-air fires and wood-burning stoves.

Which of the following, if true, provides the most support for the argument above?

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust.

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves.

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.

OG11

Conclusion : legislation is needed to regulate the use of open-air fires and wood-burning stoves.

So we need an option that should add some more point to say that legislation is needed to regulate the open-air fires.
E suits well

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust. - Irrelevant answer

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas. - - Irrelevant answer

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves. - - Irrelevant answer

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation. - - weakeners answer

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality. - Strengthen the answer stating poor air quality with lead to health issues and legislation is need to regulate this.
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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12 Mar 2015, 02:42
Caas wrote:
Wood smoke contains dangerous toxins that cause changes in human cells. Because woodsmoke presents such a high health risk, legislation is needed to regulate the use of open-air fires and wood-burning stoves.

Which of the following, if true, provides the most support for the argument above?

(A) The amount of dangerous toxins contained in woodsmoke is much less than the amount contained in an equal volume of automobile exhaust.

(B) Within the jurisdiction covered by the proposed legislation, most heating and cooking is done with oil or natural gas.

(C) Smoke produced by coal-burning stoves is significantly more toxic than smoke from wood-burning stoves.

(D) No significant beneficial effect on air quality would result if open-air fires were banned within the jurisdiction covered by the proposed legislation.

(E) In valleys where wood is used as the primary heating fuel, the concentration of smoke results in poor air quality.

OG11

Only E gives the reason why Wood smoke is bad. Rest all are OFS
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Re: Wood smoke contains dangerous toxins that cause changes in [#permalink]

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15 Mar 2015, 08:26
This was easy. A and C are irrelevant, B and D weaken the conclusion. Indeed, seems to be sub 600.
Re: Wood smoke contains dangerous toxins that cause changes in   [#permalink] 15 Mar 2015, 08:26

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