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Assumption Revision: Although there has been great scientific

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 13 Nov 2011, 19:10
How you can determine which is out of scope, between A and B. These two choices are quite relevant, although I agree that A is the right choice. B talk about the greenhouse gases, this is the consequence of globalwarming, right? I definitely confirmed this is not out of scope.
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Re: Although there has been great scientific debate for decades [#permalink]

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New post 14 Nov 2011, 00:56
+1 for A.

An Assumption must be closely tied to the conclusion. According to the argument :
Premise:Temp will rise between 3-8 degrees.
Conclusion: Coastal population will have to be displaced.

A bridges the gap between Premise and Conclusion by acting as defender of the conclusion.

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 16 Nov 2011, 21:20
A

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 08 Dec 2011, 08:26
tuanquang269 wrote:
How you can determine which is out of scope, between A and B. These two choices are quite relevant, although I agree that A is the right choice. B talk about the greenhouse gases, this is the consequence of globalwarming, right? I definitely confirmed this is not out of scope.


B introduces greenhouse gases into the picture. They are not mentioned in the argument. In an assumption question, we are not required to bring in outside knowledge (the relation between greenhouse gases and global warming). That is why B is out of scope.
Please correct me if I am mistaken.

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 08 Dec 2011, 17:03
+1 for A as it weakens the argument by negation

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New post 08 Dec 2011, 20:51
a

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 08 Dec 2011, 22:31
i'm left only with A, after selecting out all the other options.

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 08 Dec 2011, 23:01
A when negated will totally disprove the conclusion.
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Re: Although there has been great scientific debate for decades [#permalink]

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New post 08 Dec 2011, 23:08
Conclusion: rising temperatures will cause rise in sea levels, displacing millions of people
A - Defender. When negated, ie, If there were technological developments that would prevent all the said catastrophic effects, then conclusion falls apart.
B - Irrelevant
C - Irrelevant to conclusion
D - Irrelevant
E - strong wording, irrelevant

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Re: Although there has been great scientific debate for decades [#permalink]

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New post 12 Dec 2011, 04:35
Can anyone justify why not E?
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Re: Although there has been great scientific debate for decades [#permalink]

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Assumption Revision: Although there has been great scientific [#permalink]

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This question is part of the GMAT Club Critical Reasoning : Assumption" Revision Project.

Although there has been great scientific debate for decades over global warming, most scientists now agree that human activity is causing the Earth’s temperature to rise. Though predictions vary, many global warming experts believe that average global temperatures will rise between three and eight degrees Fahrenheit during the next century. Such an increase would cause an alarming rise in sea levels, displacing millions of people by destroying major population centers along the world’s coastlines. Which of the following is an assumption in support of the argument’s conclusion?

• New technological developments in the next century will not divert rising seas from the world’s coastal cities.
• Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.
• Rising sea levels similarly affect all coastal population centers.
• Some global warming experts predict a greater than eight degree Fahrenheit increase in global temperatures
during the next century.
• Human activity is the sole cause of increasing global temperatures.
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Re: Assumption Revision: Although there has been great scientific [#permalink]

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Although there has been great scientific debate for decades over global warming, most scientists now agree that human activity is causing the Earth’s temperature to rise. Though predictions vary, many global warming experts believe that average global temperatures will rise between three and eight degrees Fahrenheit during the next century. Such an increase would cause an alarming rise in sea levels, displacing millions of people by destroying major population centers along the world’s coastlines. Which of the following is an assumption in support of the argument’s conclusion?

• New technological developments in the next century will not divert rising seas from the world’s coastal cities.
this is an asssumption which is directly affecting conclusion.. so correct
• Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.
a very close second. it is truly an assumption but if we look closely. it does not support conclusion but supports the prediction...
• Rising sea levels similarly affect all coastal population centers.
no role in supporting..
• Some global warming experts predict a greater than eight degree Fahrenheit increase in global temperatures
during the next century.
out of scope
• Human activity is the sole cause of increasing global temperatures.
out of scope..
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Assumption Revision: Although there has been great scientific [#permalink]

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New post 23 Feb 2015, 10:27
The answer is A. B was the nearest one, but it is wrong, because the argument speaks about what an increase would cause, not whether it will happen or not.
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The argument concludes that rising sea levels caused by global warming will
destroy major coastal population centers and displace millions of people. Any
assumption in support of this conclusion would have to corroborate that these
events will definitively take place.

(A) CORRECT. If new technological developments in the next century allow
people to divert rising seas from the world’s cities (i.e., population centers), cities
will not be destroyed and millions of people will not be displaced. Thus, a
necessary assumption is that these technologies will not be developed.

(B) A simple awareness of the steps to reduce emissions in no way undermines
the argument’s conclusion, as this answer choice does not describe any action
being taken by individuals. Additionally, greenhouse gases are never mentioned
as the primary by-product of human activity that causes global warming, and are
therefore not sufficient to address the argument.

(C) The argument never suggests that all coastal population centers are similarly
affected; this choice is too extreme and overreaching for the argument’s
conclusion.

(D) This might be true, but it is not an assumption on which the conclusion rests.
Instead, this answer choice is simply an inference that might be drawn from the
premises.

(E) The idea that human activity is the sole cause of global warming is neither
suggested nor assumed by the argument. In addition, the wording "sole cause" is
too extreme.
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Re: Assumption Revision: Although there has been great scientific [#permalink]

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The trick here is to correctly identify the conclusion which is:

OA: The argument concludes that rising sea levels caused by global warming will destroy major coastal population centers and displace millions of people. Any assumption in support of this conclusion would have to corroborate that these events will definitively take place.

(A) CORRECT. If new technological developments in the next century allow people to divert rising seas from the world’s cities (i.e., population centers), cities will not be destroyed and millions of people will not be displaced. Thus, a necessary assumption is that these technologies will not be developed.

(B) A simple awareness of the steps to reduce emissions in no way undermines the argument’s conclusion, as this answer choice does not describe any action being taken by individuals. Additionally, greenhouse gases are never mentioned as the primary by-product of human activity that causes global warming, and are therefore not sufficient to address the argument.

(C) The argument never suggests that all coastal population centers are similarly affected; this choice is too extreme and overreaching for the argument’s conclusion.

(D) This might be true, but it is not an assumption on which the conclusion rests. Instead, this answer choice is simply an inference that might be drawn from the premises.

(E) The idea that human activity is the sole cause of global warming is neither suggested nor assumed by the argument. In addition, the wording "sole cause" is too extreme.
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Re: Although there has been great scientific debate for decades [#permalink]

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Although there has been great scientific debate for decades over global warming, most scientists now agree that human activity is causing the Earth’s temperature to rise. Though predictions vary, many global warming experts believe that average global temperatures will rise between three and eight degrees Fahrenheit during the next century. Such an increase would cause an alarming rise in sea levels, displacing millions of people by destroying major population centers along the world’s coastlines. Which of the following is an assumption in support of the argument’s conclusion?

A. New technological developments in the next century will not divert rising seas from the world’s coastal cities.

B. Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.

C. Rising sea levels similarly affect all coastal population centers.

D. Some global warming experts predict a greater than eight degree Fahrenheit increase in global temperatures during the next century.

E. Human activity is the sole cause of increasing global temperatures.
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Re: CR Revision: Although there has been great scientific debate for [#permalink]

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New post 01 Feb 2016, 02:49
souvik101990 wrote:
Although there has been great scientific debate for decades over global warming, most scientists now agree that human activity is causing the Earth’s temperature to rise. Though predictions vary, many global warming experts believe that average global temperatures will rise between three and eight degrees Fahrenheit during the next century. Such an increase would cause an alarming rise in sea levels, displacing millions of people by destroying major population centers along the world’s coastlines. Which of the following is an assumption in support of the argument’s conclusion?

A. New technological developments in the next century will not divert rising seas from the world’s coastal cities.

B. Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.

C. Rising sea levels similarly affect all coastal population centers.

D. Some global warming experts predict a greater than eight degree Fahrenheit increase in global temperatures during the next century.

E. Human activity is the sole cause of increasing global temperatures.



Option D and E- Out of Scope
Option C: Similarity in affecting costal populations. Out of Scope
Option B: Not sure. But rejected because of green house gases. Even if individuals become aware will they take steps or will the temperature reduce.

IMO: A

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CR Revision: Although there has been great scientific debate for [#permalink]

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New post 01 Feb 2016, 05:41
Although there has been great scientific debate for decades over global warming, most scientists now agree that human activity is causing the Earth’s temperature to rise. Though predictions vary, many global warming experts believe that average global temperatures will rise between three and eight degrees Fahrenheit during the next century. Such an increase would cause an alarming rise in sea levels, displacing millions of people by destroying major population centers along the world’s coastlines. Which of the following is an assumption in support of the argument’s conclusion?


Conclusion here is a little fragmented and If I can get then together it says something like -
In the next century , the rising sea levels ,caused by temperature hike , will destroy coastal cities and displace people.

A. New technological developments in the next century will not divert rising seas from the world’s coastal cities.

-This is the only option that strengthens the conclusion by eliminating the possibility that Technological enhancements will not save the coastal cities

B. Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.
-Argument does not talk about greenshouse gases and we do not know for sure what effect green house gases produce

C,D,E does not tackle the conclusion

Answer (A)
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