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Senior Manager
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In malaria-infested areas, many children tend to suffer [#permalink]
 02 Apr 2004, 21:42
Question Stats:
100% (02:49) correct
0% (00:00) wrong based on 0 sessions
In malaria-infested areas, many children tend to suffer several bouts of malaria before becoming immune to the disease. Clearly, what must be happening is that those childrenтАЩs immune systems are only weakly stimulated by a any single exposure to the malarial parasite and need to be challenged several times to produce an effective immune response.
Which of the following, if true, most seriously undermines the explanatory hypothesis?
a.Immediately after a child has suffered a bout of malaria, the childтАЩs caregivers tend to go to great lengths in taking precautions to prevent another infection, but this level of attention is not sustained.
b.Malaria is spread from person to person by mosquitoes, and mosquitoes have become increasingly resistant to the pesticides used to control them.
c.A certain gene, if inherited by children from only one of their parents, can render those children largely immune to infection with malaria.
d.Antimalaria vaccines, of which several are in development, are all designed to work by stimulating the bodyтАЩs immune system.
e. There are several distinct strains of malaria, and the bodyтАЩs immune response to any one of them does not protect it against the others.
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Manager
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E here
_________________
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The more I learn, the more I realize I know nothing!
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GMAT Club Legend
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Agree with E
_________________
Best Regards,
Paul
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Manager
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E here..
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Senior Manager
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yep E is the answer.
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Director
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Can someone explain what is wrong with "C".
Here was my logic:
If [A certain gene, if inherited by children from only one of their parents, can render those children largely immune to infection with malaria] were true wouldnt it weaken the conclusion that <children’s immune systems are only weakly stimulated by a any single exposure to the malarial parasite and need to be challenged several times to produce an effective immune response>
I follow the template if <AC "C" were true> wouldnt it weaken the conclusion <conclusion>.......
regards
gmataquaguy
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Director
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Anyone? Anyone? Bueller...?
Can someone shed some light on what is wrong with my "thought process"?
regards
gmataquaguy
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Gmataquaguy, ‘C’ is out of scope because we are talking about children who tend to suffer several bouts of malaria before becoming immune. According to ‘C’ - those children are immune to the diesease because of their inherited gene.
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