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Manager
Joined: 13 Mar 2009
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Question Stats:
33% (03:20) correct
66% (02:54) wrong based on 0 sessions
Please help me to understand the underlying logic of that CR.
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Manager
Joined: 28 Aug 2009
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The argument is "if the population of other species is increased then it would decrease the no. of ticks acquiring bacterium"..
so it would be beneficial to enquire whether something like this is currently happening?..or in software terms ...we need a "Proof of Concept" for evaluating above argument
this is what the answer says.....hope it helps..
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Intern
Joined: 16 Aug 2009
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To evaluate the argument it would helpful to know whether Deer Dicks need more number of animals to feed on. If Deer Dick larvae have enough animals to feed on then increasing the population of other animals have no effect.
Hence it would be useful to evaluate the number of animals available for deer dicks larvae to feed on and that is what choice B states
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Intern
Joined: 28 Apr 2009
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luks like A to me.. but the word 'only' sounds too extreme and disturbing..
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Manager
Joined: 17 Aug 2009
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Here's the connection -
Lyme disease----caused by deer ticks---deer ticks acquire it by feeding on bacterium which is in the larval stage----this bacterium uses mice as the host spreading infection
Now to decrease the offset of this disease, the argument states that we will introduce only those species that cannot serve as host carriers for the bacterium. This would lead to the bacterium feeding on inert hosts and therefore lead to a decrease in the number of lyme disease victims
B clearly states the correct evaluation of the argument by pointing out that this would be an effective way only if the host carrier plays a key role in its spread (i.e. the disease can only spread through the host-carrier concept)
Hope it helps
Consider kudos for the post
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SVP
Status: Graduated
Affiliations: HEC
Joined: 28 Sep 2009
Posts: 1523
Concentration: Economics, Finance
GMAT 1: 730 Q48 V44
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By process of elimination, B is the only one left standing. E is out of scope, while D is simply convoluted. Options A and C do not concern us here.
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