It is currently 18 Oct 2017, 23:13

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

Some species of Arctic birds are threatened by recent sharp

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

Hide Tags

Manager
Manager
avatar
B
Joined: 01 Nov 2016
Posts: 67

Kudos [?]: 7 [0], given: 69

Concentration: Technology, Operations
CAT Tests
Re: Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 06 Mar 2017, 13:08
I have to admit the only reason why I did not choose B was because I didn't understand B. I chose C, because that was the "best" answer.

I now know why it is B. The argument is that removing the hunting restriction will lead to an increase of non-geese birds. All of the answers do not lead to an increase of non-geese birds. However, answer B shows that removing the hunting restriction does nothing, because hunters never even meet the 5% anyways. So because it shows that removing the hunting restriction will have no effect, that is the best answer

Kudos [?]: 7 [0], given: 69

Manager
Manager
avatar
S
Joined: 22 Mar 2014
Posts: 152

Kudos [?]: 11 [0], given: 136

Location: United States
Concentration: Finance, Operations
GMAT 1: 530 Q45 V20
GPA: 3.91
WE: Information Technology (Computer Software)
Re: Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 06 Mar 2017, 13:12
chetan2u wrote:
PrakharGMAT wrote:
Hi Experts / chetan2u / daagh / mikemcgarry / aditya8062,

Please help me with this question.

Lets discuss the question stem first in a layman language-

In a particular area there are species 1. Arctic birds and 2. snow geese. Snow geese eat arctic birds. In that area there are hunters who kill snow geese, but hunters can't kill if they have already killed 5% of geese population eg- if there are 100 geese and hunters have already killed 5% of 100 ( 5 geese) and now the population is 95, so they can't kill remaining 95 geese.
But now question arises if hunters can't kill remaining 95 geese than these 95 geese will going to kill Arctic birds and so the population of arctic bird will going to decreases. Therefore, if we lift the ban and allow hunters to to go ahead and kill remaining 95 geese then they can't feed on Arctic birds and hence the population of Arctic birds will going to increase.

Conclusion--Bold part
Now we need to weaken the conclusion means we need to find something which shows that after killing remaining 95 geese the population of Arctic birds will NOT increase............What could be the reason...? :roll:

1) if hunter kill geese which feed on species Z. So the population of species Z will increase as geese will be killed...What if species Z feed on Arctic birds-- This will weaken.

Now lets look at options-

B.It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.

It says that that hunting season has been closed EARLIER THAN SCHEDULED DATE.
How is this weakening..?

The scenario discussed by 1 of GMAT aspirant is--

_____________________________________________________________________________________________

100000- Snow geese available
Hunting restriction says: Can't hunt more than 5% of 100000 i.e. 5000 in the hunting season.
Fact: Hunters are not able to reach 5000 target by the close of the hunting season.

Argument: Increase the maximum number of geese that could be hunted to a value greater than 5%, say 10%. Even if the law allows the hunter to hunt 10,000 geese, it wouldn't do any good. If the hunters are not able to reach 5000 hunting target, they will definitely not reach 10,000 target. Thus, "B" undermines the argument/suggestion.

_____________________________________________________________________________________________

Its only mentioned that the hunting season closed many years before the scheduled date.
Nowhere is mention that the hunters were not able to kill 5000 geese... we can also say that might be hunters have already killed 5000 before the closure of scheduled date..


Please assist, how does B weakens conclusion.


Hi PrakharGMAT,

The conclusion says that if we lift the restrictions the population of arctic birds will increase as snow geese feeds on it.
Th restriction on hunting snow geese comes into effect when their population has gone down by 5%, that is 5% snow geese have been killed..

what does B say--
(B) It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.

It tells us that restriction came into play long time back, meaning the hunters have never hunted a % touching 5%.
If this restriction is lifted, the numbers hunted will not go up as the threshold % -5%- has never been reached..

So, it can be assumed that if hunters continue hunting at the same pace with or without restrictions, there will be no change in the decrease of arctic birds

Scheduled date here means WINTER..
the hunting is allowed in WINTERS, so there is a specific date at the end of winters every year, when the hunting has to stop. It will stop prior to this date if the % hunted that year has gone upto5%...


I beg to differ you in one point. It is clearly mentioned in the argument "the hunting season ends if and when hunting has reduced the population by five percent". Means, when the threshold of 5% is reached, geese killings are stopped. So it is definitely possible that every year the hunters may have reached the threshold 5% well before the scheduled end date leading to pre-ending of the hunting every time.

Kudos [?]: 11 [0], given: 136

BSchool Forum Moderator
User avatar
D
Status: Aiming MBA
Joined: 18 Jul 2015
Posts: 2501

Kudos [?]: 789 [0], given: 64

Location: India
Concentration: Healthcare, Technology
GMAT 1: 710 Q50 V35
GPA: 3.65
WE: Information Technology (Health Care)
Premium Member Reviews Badge
Re: Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 30 Aug 2017, 05:16
arunavamunshi1988 wrote:
I beg to differ you in one point. It is clearly mentioned in the argument "the hunting season ends if and when hunting has reduced the population by five percent". Means, when the threshold of 5% is reached, geese killings are stopped. So it is definitely possible that every year the hunters may have reached the threshold 5% well before the scheduled end date leading to pre-ending of the hunting every time.


Hi arunavamunshi1988 ,

Here I found a flaw in your reasoning:

You are saying it is possible to reach that threshold and hence the preclosure. But what if it was it not the case.

Remember our aim is to weaken it. A slight dubious option could help us weaken it.

Hence, the answer mentioned is 100% correct.

Does that make sense?
_________________

V21 ---> V40!

Kudos [?]: 789 [0], given: 64

Intern
Intern
avatar
B
Joined: 30 Oct 2016
Posts: 3

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

Re: Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 30 Aug 2017, 13:21
I will go with option B: It has been many years since the restriction lead to the hunting season for snow geese being closed earlier than the scheduled date.

Conclusion: Dropping this restiction would allow the other species to recover.
Restriction: The hunting season ends if and when hunting has reduced the population by five percent

Option B says that even with restriction in place, the hunters are unable to kill enough Geese to reduce the population by 5%. So, dropping the restriction doesn't help to reduce the number of Geese. It clearly weakens the conclusion.

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

Manager
Manager
avatar
B
Joined: 13 Apr 2016
Posts: 54

Kudos [?]: 11 [0], given: 61

WE: Information Technology (Retail Banking)
CAT Tests
Re: Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 01 Sep 2017, 12:43
everybody comments that ans must be D.
please explain?

Kudos [?]: 11 [0], given: 61

Expert Post
GMAT Club Verbal Expert
User avatar
B
Joined: 20 Nov 2016
Posts: 160

Kudos [?]: 87 [0], given: 35

Some species of Arctic birds are threatened by recent sharp [#permalink]

Show Tags

New post 01 Sep 2017, 19:33
madindian wrote:
everybody comments that ans must be D.
please explain?


This explanation from earlier in the thread might help: https://gmatclub.com/forum/some-species ... l#p1298123
_________________

www.gmatninja.com

Subscribe to GMAT Question of the Day: E-mail | RSS

Kudos [?]: 87 [0], given: 35

Some species of Arctic birds are threatened by recent sharp   [#permalink] 01 Sep 2017, 19:33

Go to page   Previous    1   2   3   4   5   [ 86 posts ] 

Display posts from previous: Sort by

Some species of Arctic birds are threatened by recent sharp

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


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®.