GMAT Verbal Reasoning Practice Test 7

Question : 16 of 100

Marks: +1, -0

Immediately after a child has suffered a bout of malaria, the child’s caregivers tend to go to great lengths in taking precautions to prevent another infection, but this level of attention is not sustained.
Malaria is spread from person to person by mosquitoes, and mosquitoes have become increasingly resistant to the pesticides used to control them.
A certain gene, if inherited by children from only one of their parents, can render those children largely immune to infection with malaria.
Anti malaria vaccines, of which several are in development, are all designed to work by stimulating the body’s immune system.
There are several distinct strains of malaria, and the body’s immune response to any one of them does not protect it against the others

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