The National Disease Control agency of Country X found in a recent review of statistics that the prevalence of malaria is twice as high in the western portion of the country as it is in the eastern portion of the country. If a newlywed couple from the high-malaria western portion of the country, therefore, were to move to the eastern portion in order to start their family, they could expect a lower likelihood that their children would contract malaria.
Which of the following, if true, would most
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Which of the following, if true, would most
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