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# Assumption Revision: Although there has been great scientific

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Jamboree GMAT Instructor
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Re: CR Revision: Although there has been great scientific debate for [#permalink]

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20 Feb 2016, 05:31
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The argument states that global warming will lead to an increase in temperature which will eventually raise the sea levels, displacing millions of people by destroying major population hubs along the coastlines. The author assumes that people have to be relocated and there are no means to combat the situation. "A" rightly states the assumption. If "A" is reversed that is "Technological developments will divert the seas" then it goes against the conclusion.Hence that is the assumption.
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Re: CR Revision: Although there has been great scientific debate for [#permalink]

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10 Apr 2016, 15:02
use of negation test on option A gives us 'technological developments will divert seas towards world's coastal cities' breaks the conclusion . So this is the correct answer

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

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19 May 2016, 12:23
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hi,

as this is the cause and effect question. human activity ----->rise in earth temp----> rise in sea level----->coastal cities and people get displaced.

in cause and effect question.1.) cause comes before effect 2.) no alternate cause for the effect.
so, option E, which states human activity is the 'sole reason' is what i thought the correct answer due to above reasons.Please explain.

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

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29 Jan 2017, 00:15
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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13 May 2017, 01:38
Clearly option A is the answer. Option B, when negated, tackles the awareness of the humans but it does not translate that Humans will do something about rising temperatures and sea levels. Hence B is out.
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Assumption Revision: Although there has been great scientific [#permalink]

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13 May 2017, 10:36
DeepikaV wrote:
hi,

as this is the cause and effect question. human activity ----->rise in earth temp----> rise in sea level----->coastal cities and people get displaced.

in cause and effect question.1.) cause comes before effect 2.) no alternate cause for the effect.
so, option E, which states human activity is the 'sole reason' is what i thought the correct answer due to above reasons.Please explain.

I think you have not understood the argument properly. The argument concluded that the rising sea level will displace millions of people by destroying major population centers along the world’s coastlines.

So, Assumption could be something that says people don't have a way to save themselves or something that says these people are not the part of the whole problem, hence killing them is not going to help us.

Option E is saying Humans are the sole reason. What if they are not the sole reason? In that case also they are still a problem and displacing that would help us. So, this cannot be an assumption.

If I talk about option A, we are given "New technological developments in the next century will not divert rising seas from the world’s coastal cities.". It means we don't have a way to save those people. Hence, this point lies inline with what we thought.

I hope that makes sense.

P.S: Sorry, I saw your post after 1 year otherwise I would have replied on time.
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Re: Assumption Revision: Although there has been great scientific [#permalink]

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23 Jun 2017, 19:57
this is so unbelievable, the lesson here is to recognize the pattern and try not to pay attention to outside knowledge. Clearly, test takers have to assume that there is a technology to prevent catastrophe in the conclusion of the argument.

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

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24 Jun 2017, 03:04
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chesstitans wrote:
this is so unbelievable, the lesson here is to recognize the pattern and try not to pay attention to outside knowledge. Clearly, test takers have to assume that there is a technology to prevent catastrophe in the conclusion of the argument.

That's the beauty of this question.

The author said an increase in temperature would displace people. That means he is assuming that we cannot save them anyhow.

This is what option A is doing. It says even we have some sort of technological improvement, we cannot save them. Hence, it strengthens author's conclusion.

I know rejecting A because it seems to provide an outside knowledge could be our first step. But my friend, be careful.
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Re: Assumption Revision: Although there has been great scientific [#permalink]

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27 Jul 2017, 22:31
Merged topics. Please, search before posting questions!
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Re: Assumption Revision: Although there has been great scientific [#permalink]

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28 Jul 2017, 08:03
I agree A might be best of the rest, but it certainly isn't the best. It talks about only cities,whereas nowhere in the premise or the conclusion or even the stimuli has it been mentioned that "major population centers" are mostly coastal cities. Bad question, I'd say! part of the reason, I am always scared to do CR from any company other than OG or GMATPrep

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

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06 Sep 2017, 06:39
I think E should have been the OA.
between A and E.
A brings in additional information. so chuck it.
while in E we are putting all speculation to rest by sticking to human activities as sole cause of global warming.

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

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09 Sep 2017, 03:55
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.

Conclusion: 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.

Falsification:
1) What if this increase in the sea levels could be checked?
2) What if this global temperature does not increase because of the counterbalancing effect of some other natural phenomenon?

Possible Assumption:
1) There’s no way the increase in the sea level or increase in the global temperature could be checked.

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.
Negate: New technological developments in the next century will divert rising seas from the world’s coastal cities
If the technological developments in the next century can do that, then we will be able to break the conclusion. Thus, this option has the potential to be a prospective assumption.

B. Individuals will not become more aware of the steps they can take to reduce the emission of greenhouse gases.
Negate: Individuals will become more aware of the steps they can take to reduce the emission of greenhouse gases
Even if the emission of the greenhouse gases is reduced, we do not know, within the scope of the argument, whether the event will have a positive or negative effect on the problems and whether the effect will be significant or not.

C. Rising sea levels similarly affect all coastal population centers.
Out of scope.

D. Some global warming experts predict a greater than eight degree Fahrenheit increase in global temperatures during the next century.
Negate: No global warming experts predict a greater than eight-degree fah increase in the global temperature during the next century.
Doesn’t matter. The range mentioned in the argument is enough for the dooms days.

E. Human activity is the sole cause of increasing global temperatures.
Negate: Human activity is not the sole cause of increasing global temperatures.
There may be some other factors, say X. But, this new information does not break the conclusion.

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Re: Assumption Revision: Although there has been great scientific   [#permalink] 09 Sep 2017, 03:55

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