GMAT Verbal Reasoning Practice Test 2

Question : 40 of 101

Marks: +1, -0

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:

In most major cities, air-pollution problems are caused almost entirely by local industry.
Air-pollution regulations on industry have a significant impact on the quality of the air.
The air-pollution problems of other major cities are basically similar to those once suffered by London.
An increase in the number of bird species in and around a city is desirable.
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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