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# In the years since the city of London imposed strict

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In the years since the city of London imposed strict [#permalink]

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03 Apr 2012, 06:44
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In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.
Each of the following is an assumption made in the argument above EXCEPT:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
(D) An increase in the number of bird species in and around a city is desirable.========
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.
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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 06:45
All of them look like assumptions to me...
The only possible answer i can think of is D .

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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 07:01
I feel its A.

What's the OA?

Posted from my mobile device
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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 11:32
i think it's D ...OA plz..with explanation
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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 17:53
In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.
Each of the following is an assumption made in the argument above EXCEPT:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
(D) An increase in the number of bird species in and around a city is desirable.========
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

I went for E.
Conclusion: Similar air-pollution rules should be imposed in other major cities.
the conclusion clearly implies that it's desirable to have increase in bird in and around the city. - so I rejected D
A cannot be the answer because if air pollution is not a problem then conclusion wouldn't have been recommended for other cities.

I felt E is the answer because the argument talks about # of bird species seen - doesn't matter whether actual # of species has increased or not; what argument is concerned about is # of bird species seen
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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 19:45
I think the answer is D. What is the answer given in the source where you got this question? Please share.
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Re: CR......In the years since the city of London imposed [#permalink]

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03 Apr 2012, 23:38
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OA IS A....

Explanation still required...
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Re: CR......In the years since the city of London imposed [#permalink]

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06 Apr 2012, 08:45
+1 A

My explanations are the following:

shikhar wrote:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry. - CORRECT: The argument only focuses on the problem of the number of birds. We cannot assume that there are not other air-pollution problems generated by other causes such as cars. (B) Air-pollution regulations on industry have a significant impact on the quality of the air. - The author assumes that there is a causal relationship between the regulations and the quality of air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London. - The author must assume that the conditions in other cities are similar to those in London.
(D) An increase in the number of bird species in and around a city is desirable.- The author must assume that the other cities also want a greater number of bird species.
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area. - I agree that this could also be the answer. But A seems better.

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Re: In the years since the city of London imposed strict [#permalink]

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19 Feb 2013, 22:32
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

If increase in birds seen doesn't imply increase in Birds species .

This shows there is no use of implementing same regulations in other cities when London doesn't have stated affect.
Conclusion falls apart after negating (E).Hence , an assumption
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Re: In the years since the city of London imposed strict [#permalink]

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20 Feb 2013, 03:26
shikhar wrote:
In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.
Each of the following is an assumption made in the argument above EXCEPT:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
(D) An increase in the number of bird species in and around a city is desirable.========
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

Isn't D a strengthener? Experts please explains the PoE
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Re: In the years since the city of London imposed strict [#permalink]

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20 Feb 2013, 13:00
greatps24 wrote:
shikhar wrote:
In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.
Each of the following is an assumption made in the argument above EXCEPT:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
(D) An increase in the number of bird species in and around a city is desirable.========
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

Isn't D a strengthener? Experts please explains the PoE

Hi great apps
I did not get your doubt ....Did you opt for D because its strengthening....Moreover its not an strengthener its just an assumption ...basis on the last sentence of the argument.....that Similar rules needs to be implemented in other cities as well.

If you go through powerscore guide .....it says that diffeerence between sterngthening and assumption is very thin.....Infact,In case of cause and effect argument the answers considered right for strengthen question will also stand for assumption questions.....

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Re: In the years since the city of London imposed strict [#permalink]

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10 Apr 2014, 22:50
In the years since the city of London imposed strict air-pollution regulations on local industry, the number of bird species seen in and around London has increased dramatically. Similar air-pollution rules should be imposed in other major cities.
Each of the following is an assumption made in the argument above EXCEPT:
(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
(D) An increase in the number of bird species in and around a city is desirable.========
(E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.

Assumption Except.

Should be (A). after seeing 'almost entirely' by phrase

Regulations are targeted on local industry. So, if in most major cities problems are not caused almost entirely by local industry, then conclusion doesn't fall since there can be minor problems from local industry which can be rectified by imposing regulations.

The keyword here is 'almost entirely'.

(D). says an assumption, if the goal is not desired then why should similar rules be imposed in other major cities.
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Re: In the years since the city of London imposed strict   [#permalink] 10 Apr 2014, 22:50
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