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In a certain wildlife park, park rangers are able to track

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In a certain wildlife park, park rangers are able to track [#permalink]

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New post 24 Jul 2012, 00:47
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In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.

Which of the following is an assumption on which the argument depends?

(A) The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety.
(B) The fertility rate of uncollared female rhinoceroses has been increasing in the past few decades.
(C) Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.
(D) the male rhinoceroses do not lose their collars as often as the female rhinoceroses do.
(E) the tranquilizer used in immobilizing rhinoceroses is the same as used for other mammals.


[Reveal] Spoiler:
Why is b wrong???
Can anyone explain....
[Reveal] Spoiler: OA

Last edited by hazelnut on 20 Apr 2017, 16:49, edited 2 times in total.
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 24 Jul 2012, 01:38
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rahulsukhija wrote:
In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.

Which of the following is an assumption on which the argument depends?

a) The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety.

b) The fertility rate of uncollared female rhinoceroses has been increasing in the past few decades.

c) Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.

d) the male rhinoceroses do not lose their collars as often as the female rhinoceroses do.

e) the tranquilizer used in immobilizing rhinoceroses is the same as used for other mammals.


Why is b wrong???
Can anyone explain....



In assumption question, the assumption should directly hit the conclusion , which states that the tranquilizers causes infertility.

We never know that if the un collared female rhinos are getting the tranquilizers injections or not(even for for other reasons).

So, (B) is incorrect choice.
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 24 Jul 2012, 04:34
Hi,

To me, B is irrelevant. If the uncollared Rhinoceros fertility rate increases, decreases or stays stable, it's in no way a needed assumption to state that collared Rhino's fertility is decreasing because of the tranquilizer.

C on the other hand tells you that the author rules out the fact that collared Rhino's fertility didn't decrease because of the stress of getting collared. This is a needed assumption to the author's point.

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In a certain wildlife park, park rangers are able to track [#permalink]

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New post 09 Jan 2013, 07:54
In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.

Which of the following is an assumption on which the argument depends?

A. The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety.
B. The fertility rate of uncollared female rhinoceroses in the park has been increasing in the past few decades.
C. Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.
D. The male rhinoceroses in the wildlife park do net lose their collars as often as the park’s female rhinoceroses do.
E. The tranquilizer used in immobilizing rhinoceroses is the same as the tranquilizer used in working with other large mammals.
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In a certain wildlife park, park rangers are able to track [#permalink]

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Marcab wrote:
In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.

Which of the following is an assumption on which the argument depends?

(A) The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety.
(B) The fertility rate of uncollared female rhinoceroses has been increasing in the past few decades.
(C) Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.
(D) the male rhinoceroses do not lose their collars as often as the female rhinoceroses do.
(E) the tranquilizer used in immobilizing rhinoceroses is the same as used for other mammals.


The conclusion is : some substance in the tranquilizer inhibits fertility.

Negating C means that stress that female rhinoceroses may suffer due to the collars has negative effect on their fertility. Then, the argument will be not valid at all.

Hence, i'll go with C.
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 09 Jan 2013, 09:02
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 09 Jan 2013, 09:45
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 13 Jan 2013, 02:52
Causal assumption in full effect.

Conclusion-

Tranquilizer Juice>>>Fertility

Assume no other factor can effect Fertility. "C" fits this assumption perfectly...
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Re: In a certain wildlife park, park rangers are able to track [#permalink]

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New post 06 Nov 2016, 00:30
rahulsukhija wrote:
In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.

Which of the following is an assumption on which the argument depends?

a) The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety.

b) The fertility rate of uncollared female rhinoceroses has been increasing in the past few decades.

c) Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.

d) the male rhinoceroses do not lose their collars as often as the female rhinoceroses do.

e) the tranquilizer used in immobilizing rhinoceroses is the same as used for other mammals.


Why is b wrong???
Can anyone explain....


a) The dose of tranquilizer delivered by a tranquilizer dart is large enough to give the rangers putting collars on rhinoceroses a generous margin of safety. Irrelevant; Margin of safety for rangers is not relevant to the argument

b) The fertility rate of un-collared female rhinoceroses has been increasing in the past few decades. Irrelevant; This does not give any information about the effect of Tranquilizers on fertility

c) Any stress that female rhinoceroses may suffer as a result of being immobilized and handled has little or no negative effect on their fertility.
"The substance in the tranquilizer is the reason for infertility, there is no other cause for infertility (i,e stress due to immobilization)

d) the male rhinoceroses do not lose their collars as often as the female rhinoceroses do.
irrelevant; the argument deals only with FEMALE rhinos. 

e) the tranquilizer used in immobilizing rhinoceroses is the same as used for other mammals.
 irrelevant; the argument deals only with rhinos. 
Re: In a certain wildlife park, park rangers are able to track   [#permalink] 06 Nov 2016, 00:30
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