BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

BIRDS!

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Senior | Next Rank: 100 Posts
Posts: 89
Joined: Sun Jun 29, 2008 12:24 am
Location: Indore, India
Thanked: 3 times

BIRDS!

by rahulakacyrus » Sat Mar 21, 2009 2:00 pm
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.
Rahul Madan (Cyrus)
Top
Source: — Critical Reasoning |
Junior | Next Rank: 30 Posts
Posts: 21
Joined: Mon Feb 16, 2009 6:53 pm

by vcgmat » Sat Mar 21, 2009 2:48 pm
(D)
Top
User avatar
MBA Student
Posts: 1194
Joined: Sat Aug 16, 2008 9:42 pm
Location: Paris, France
Thanked: 71 times
Followed by:17 members
GMAT Score:710

by gmat740 » Sat Mar 21, 2009 3:02 pm
This is typically an assumption X question

I would negate the options and then check whether it is weakening or not.If it is weakening,then it is an assumption and so it is not required.
A) In most major cities, air-pollution problems are caused almost entirely by local industry.
air-pollution problems are not caused almost entirely by local industry
So??
Is there any need to impose strict pollution regulation??NO
so this is a correct assumption.And not correct answer
(B) Air-pollution regulations on industry have a significant impact on the quality of the air
Air-pollution regulations on industry is not having a significant impact on the quality of the air.


But is quality of air in any way to deal with birds population??

In real world it might be but yes there is no information regarding this, so this option least affects the argument.

So this is the correct answer.


[c]The air-pollution problems of other major cities are basically similar to those once suffered by London
no need to say this.....
Similar air-pollution rules should be imposed in other major cities.
D) An increase in the number of bird species in and around a city is desirable.
that's why we are imposing regulations, isn't it??
So valid assumption

E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.


Quiet a Valid assumption


Hope this helps.
I think this question is from CR bible(I don't remember it although)
Top
Master | Next Rank: 500 Posts
Posts: 424
Joined: Sun Dec 07, 2008 5:15 pm
Location: Sydney
Thanked: 12 times

by piyush_nitt » Sat Mar 21, 2009 8:43 pm
gmat740 wrote:This is typically an assumption X question

I would negate the options and then check whether it is weakening or not.If it is weakening,then it is an assumption and so it is not required.
A) In most major cities, air-pollution problems are caused almost entirely by local industry.
air-pollution problems are not caused almost entirely by local industry
So??
Is there any need to impose strict pollution regulation??NO
so this is a correct assumption.And not correct answer
(B) Air-pollution regulations on industry have a significant impact on the quality of the air
Air-pollution regulations on industry is not having a significant impact on the quality of the air.


But is quality of air in any way to deal with birds population??

In real world it might be but yes there is no information regarding this, so this option least affects the argument.

So this is the correct answer.


[c]The air-pollution problems of other major cities are basically similar to those once suffered by London
no need to say this.....
Similar air-pollution rules should be imposed in other major cities.
D) An increase in the number of bird species in and around a city is desirable.
that's why we are imposing regulations, isn't it??
So valid assumption

E) The increased sightings of bird species in and around London reflect an actual increase in the number of species in the area.


Quiet a Valid assumption


Hope this helps.
I think this question is from CR bible(I don't remember it although)
IMO D

Air-pollution regulations on industry is having a significant impact on the quality of the air.

If the quality of air is impacted by industries then it make sense to implement the regulations.

Increase in the bird population is just an outcome due to the implementation of regulations.

It needs not to be an assumption!

Please share your thoughts!
Top
Master | Next Rank: 500 Posts
Posts: 280
Joined: Tue Sep 30, 2008 4:18 am
Thanked: 5 times
GMAT Score:610

by Jatinder » Sat Mar 21, 2009 9:09 pm
shud be A

Every other choice seems to be an assumption
but in A, the words "almost entirely" are alarming.
Keep flying
Top
User avatar
MBA Student
Posts: 1194
Joined: Sat Aug 16, 2008 9:42 pm
Location: Paris, France
Thanked: 71 times
Followed by:17 members
GMAT Score:710

by gmat740 » Sat Mar 21, 2009 11:17 pm
Please provide the OA
Top
User avatar
Senior | Next Rank: 100 Posts
Posts: 89
Joined: Sun Jun 29, 2008 12:24 am
Location: Indore, India
Thanked: 3 times

by rahulakacyrus » Sun Mar 22, 2009 10:02 am
Hey guys...sorry for the late reply..OA is A..
Rahul Madan (Cyrus)
Top
User avatar
MBA Student
Posts: 1194
Joined: Sat Aug 16, 2008 9:42 pm
Location: Paris, France
Thanked: 71 times
Followed by:17 members
GMAT Score:710

by gmat740 » Sun Mar 22, 2009 9:42 pm
Every other choice seems to be an assumption
but in A, the words "almost entirely" are alarming.
Thanks for correcting me.
Top
Master | Next Rank: 500 Posts
Posts: 424
Joined: Sun Dec 07, 2008 5:15 pm
Location: Sydney
Thanked: 12 times

by piyush_nitt » Sat Apr 18, 2009 3:20 am
gmat740 wrote:
Every other choice seems to be an assumption
but in A, the words "almost entirely" are alarming.
Thanks for correcting me.
Sorry guys for bringing this post up again!

I still don't understand the reason why OA is A.

My reasoning:

Premise: 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

Conclusion: Similar air-pollution rules should be imposed in other major cities.

Air - pollution in London was due to the pollution of Local Industry and ban helps london to reduce the air - pollution. hence , similiar bans should be implemented in other major cities.

NOw as per option A:

A) In most major cities, air-pollution problems are caused almost entirely by local industry

Option A states that major pollution caused by Local Industry

and NOW if negate it i.e air-pollution problems are NOT caused almost entirely by local industry then it means even if we implement the SAME bans there would not be any positive effect as the source of pollution is different. In turn it weakens the argument.

Please share your thoughts!

Thanks heaps!
Top
Master | Next Rank: 500 Posts
Posts: 300
Joined: Sat Aug 22, 2015 10:33 am

by kris77 » Fri May 13, 2016 11:30 pm
I believe the answer should be A
Top
Post new topic Post Reply
• Page 1 of 1