It is currently 23 Oct 2017, 14:14

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Rabbits were introduced to Tambor Island in the nineteenth century.

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

3 KUDOS received
Intern
Intern
avatar
B
Joined: 27 Jul 2015
Posts: 4

Kudos [?]: 16 [3], given: 1

Location: Canada
Concentration: Technology, Entrepreneurship
GMAT 1: 750 Q50 V41
WE: Consulting (Computer Software)
Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 30 Aug 2016, 14:46
3
This post received
KUDOS
8
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

61% (01:19) correct 39% (02:06) wrong based on 637 sessions

HideShow timer Statistics

Rabbits were introduced to Tambor Island in the nineteenth century. Overgrazing by the enormous rabbit population now menaces the island's agriculture. The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere. There is, however, a small chance that the virus will infect the bilby, an endangered native herbivore. The government's plan, therefore, may serve the interests of agriculture but will clearly increase the threat to native wildlife.

The argument above assumes which of the following?

A) There is less chance that the virus will infect domestic animals on Tambor than that it will infect wild animals of species native to the island.
B) Overgrazing by rabbits does not pose the most significant current threat to the bilby.
C) There is at least one alternative means of reducing the rabbit population that would not involve any threat to the bilby.
D) There are no species of animals on the island that prey on the rabbits.
E) The virus that the government proposes to use has been successfully used elsewhere to control populations of rabbits.
[Reveal] Spoiler: OA

Kudos [?]: 16 [3], given: 1

1 KUDOS received
Manager
Manager
avatar
B
Joined: 18 Aug 2013
Posts: 150

Kudos [?]: 55 [1], given: 127

Location: India
Concentration: Operations, Entrepreneurship
GMAT 1: 640 Q48 V28
GPA: 3.92
WE: Operations (Transportation)
Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 30 Aug 2016, 19:35
1
This post received
KUDOS
s1lntz wrote:
Rabbits were introduced to Tambor Island in the nineteenth century. Overgrazing by the enormous rabbit population now menaces the island's agriculture. The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere. There is, however, a small chance that the virus will infect the bilby, an endangered native herbivore. The government's plan, therefore, may serve the interests of agriculture but will clearly increase the threat to native wildlife.

The argument above assumes which of the following?

A) There is less chance that the virus will infect domestic animals on Tambor than that it will infect wild animals of species native to the island.
B) Overgrazing by rabbits does not pose the most significant current threat to the bilby.
C) There is at least one alternative means of reducing the rabbit population that would not involve any threat to the bilby.
D) There are no species of animals on the island that prey on the rabbits.
E) The virus that the government proposes to use has been successfully used elsewhere to control populations of rabbits.


Here are my views--

Option (A)--Irrerelevant.Even if it infects domestic animals less and wil animals more it is not an assumption on which the conclusion is stated.Out
Option (B)--Good.Keep it.
Option ©--So what if there is.We need an assumption whereas this states another remedy.Out of Scope.Out.
Option (D)--Even if there is any its not an assumption used in the argument.Out of Scope.Out.
Option (E)--Its already been stated in the argument and thus is not an assumption.Out.

OA is 'B'.

Kudos [?]: 55 [1], given: 127

Intern
Intern
avatar
Joined: 26 May 2016
Posts: 42

Kudos [?]: 8 [0], given: 1

Location: India
Concentration: Strategy, Technology
Schools: IIMA (A)
GMAT 1: 650 Q49 V32
GPA: 3.65
WE: Information Technology (Computer Software)
Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 31 Aug 2016, 01:41
B for.me as well ...what's the OA

Sent from my Nexus 5 using GMAT Club Forum mobile app
_________________

Best Regards,
Ashwini

Kudos if it was helpful :)

Kudos [?]: 8 [0], given: 1

Manager
Manager
avatar
Joined: 01 Sep 2016
Posts: 117

Kudos [?]: 9 [0], given: 83

Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 14 Sep 2016, 02:31
Yes..Only B makes sense to me 8-)

ashwini86 wrote:
B for.me as well ...what's the OA

Sent from my Nexus 5 using GMAT Club Forum mobile app

Kudos [?]: 9 [0], given: 83

Intern
Intern
avatar
B
Joined: 22 Jul 2016
Posts: 27

Kudos [?]: 7 [0], given: 33

Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 10 Jan 2017, 07:25
Conclusion : The government's plan might be successful to reduce the population of Rabbits but it will clearly increase the threat to native wildlife.

Introduction of Rabits >> Overgrazing
Overgrazing >> Impact on native wildlife ??
if there is any impact , then Overgrazing would have increased the threat to native wildlife not the government's plan.
Hence the assumption is that there is no other factor which will cause negative impact on native wildlife apart from the government's plan.

Ans : B

Kudos [?]: 7 [0], given: 33

1 KUDOS received
Manager
Manager
avatar
B
Joined: 25 Jun 2016
Posts: 61

Kudos [?]: 73 [1], given: 4

GMAT 1: 780 Q51 V46
Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 10 Jan 2017, 07:48
1
This post received
KUDOS
The arguer concludes that the plan to reduce the rabbit population by introducing this virus will clearly increase the threat to local wildlife.
The arguer's evidence is that the there is a small chance that the virus could infect bilby population.

I think the small chance can be taken as a clue. So, okay, there is a small chance that the bilby population will be hurt be the population. But for this one piece of evidence to lead to the conclusion that the plan will increase the threat to local wildlife, we have to assume that introducing the virus wouldn't help local wildlife in some way that would be more significant than this small threat of infecting the bilby. In fact, we have to assume that the plan won't help the bilby itself in some way that would prove more significant than the small threat.

That's a direct match for answer choice B.

If we don't have a clear prediction, we can use the denial test:

Denying B we get, 'Overgrazing by the rabbits DOES pose the greatest threat to the bilby population." If this were the case, then introducing the virus would reduce the most significant threat. So even though it would pose a small threat itself, overall the plan would actually help the bilby. So, when we deny B, the arg falls apart. Therefore B must be an assumption of the argument.

Kudos [?]: 73 [1], given: 4

Manager
Manager
avatar
B
Joined: 20 Jun 2016
Posts: 52

Kudos [?]: 6 [0], given: 167

Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 21 Aug 2017, 09:08
chetan2u

Can you please explain this ?
_________________

Life is a challenge face it.

Kudos [?]: 6 [0], given: 167

Expert Post
Math Forum Moderator
avatar
P
Joined: 02 Aug 2009
Posts: 4994

Kudos [?]: 5534 [0], given: 112

Re: Rabbits were introduced to Tambor Island in the nineteenth century. [#permalink]

Show Tags

New post 21 Aug 2017, 09:32
Suryangshu wrote:
chetan2u

Can you please explain this ?


Quote:
Rabbits were introduced to Tambor Island in the nineteenth century. Overgrazing by the enormous rabbit population now menaces the island's agriculture. The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere. There is, however, a small chance that the virus will infect the bilby, an endangered native herbivore. The government's plan, therefore, may serve the interests of agriculture but will clearly increase the threat to native wildlife.

The argument above assumes which of the following?

A) There is less chance that the virus will infect domestic animals on Tambor than that it will infect wild animals of species native to the island.
B) Overgrazing by rabbits does not pose the most significant current threat to the bilby.
C) There is at least one alternative means of reducing the rabbit population that would not involve any threat to the bilby.
D) There are no species of animals on the island that prey on the rabbits.
E) The virus that the government proposes to use has been successfully used elsewhere to control populations of rabbits


hi..
the para talks of overgrazing by large rabbit population and the use of a virus which will lower down the population of these rabbits. BUT there is some chance of a local herbivore getting infected. Therefore, the plan will reduce the rabbit population but will increase the threat to local species too.

Assumption-?

without looking at the choices, what can be the assumption for the argument-
1) herbivore cannot be vaccinated or protected against the virus.
2) If threat is INCREASING because of virus, the species are better with the existing system. And this system includes the overgrazing by enormous population of rabbit.
Ofcourse one-two more can be found but the above two will remain


point 2 is given by choice B..

lets see what other choices rae doing..

A) There is less chance that the virus will infect domestic animals on Tambor than that it will infect wild animals of species native to the island.
Out of scope. we are not interested in domestic animals here

B) Overgrazing by rabbits does not pose the most significant current threat to the bilby.
YEAH, point 2 above

C) There is at least one alternative means of reducing the rabbit population that would not involve any threat to the bilby.
The para is talking of a specific plan, so alternative mean will not effect the argument

D) There are no species of animals on the island that prey on the rabbits.
Again out of scope, we are talking of a specific case

E) The virus that the government proposes to use has been successfully used elsewhere to control populations of rabbits
Not necessary. it may be introduced in very small scale till now.
_________________

Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html

Kudos [?]: 5534 [0], given: 112

Re: Rabbits were introduced to Tambor Island in the nineteenth century.   [#permalink] 21 Aug 2017, 09:32
Display posts from previous: Sort by

Rabbits were introduced to Tambor Island in the nineteenth century.

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.