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]

02 Sep 2005, 08:09

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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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02 Sep 2005, 08:21

it's not c, d, e

so either A or B.

A says entirely which seems to be an exaggeration.
but B is about the quality of air.

I would guess B.

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02 Sep 2005, 08:42

why not E?

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02 Sep 2005, 10:02

A should be the answer

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02 Sep 2005, 10:12

E

How can E be an assumption?

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02 Sep 2005, 10:49

riteshgupta1 wrote:

why not E?

Here's why E is an assupmtion of the argument. We're looking for a statement that is not an assumption in this question.

(B) Air-pollution regulations on industry have a significant impact on the quality of the air.
- This statement is nescessary to support the argument that air pollution regulations are effective

(C) The air-pollution problems of other major cities are basically similar to those once suffered by London.
- THis statement is needed to support the plan to implement the same regulations in other parts of the world

(D) An increase in the number of bird species in and around a city is desirable.
- This statement is needed to support that the air pollution measures put in place to increase the number of bird species 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.
- This statement is needed to support the author's comment that the number of species has increased

In fact, A is the only one that does not have any real use to the argument.

(A) In most major cities, air-pollution problems are caused almost entirely by local industry.
- With this statement, nothing in the argument is supported for.

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02 Sep 2005, 11:14

E it is.

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02 Sep 2005, 12:33

IMO E it is....
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02 Sep 2005, 12:45

I think the answer should be A because it nullifies the argument.

What is the OA?

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02 Sep 2005, 16:42

I think its E.

A has to be an assumption since it is saying the rise of bird species is related to less pollution, which in turn is related to control of regulated pollution output from local industries. If OTHER industries were causing pollution too, then the birds probably would not have been sighted(since it dosn't mention anything about reducing pollution for OTHER industries), hence A stands.

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02 Sep 2005, 22:12

E it is.

Birds increased due to reduced pollution. If this is the underlying assumption, then A is one of the assumptions becasue if there are other industries and they are still polluting, then the birds would not have icreased!
Pollution is pollution whether they are from local industries or other industries.

Good one! Where are these CRs from by the way? Any specific collection? OG CR is just average! Any other good source to practice guys?
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03 Sep 2005, 01:03

OA is A.

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03 Sep 2005, 01:04

We're looking for a statement that is not an assumption needed for the argument to stand. A is the only one that has no real use around here.

[#permalink] 03 Sep 2005, 01:04

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