Allergies are on the rise in industrialized nations because improved hygiene has eliminated the microbes that, upon exposure, prompt infants' allergy-iihWrjng immune-system responses. Any ill effects of the rise in allergies, however, have been more than offset by the reduction in infant mortality caused by the elimination of pathogens. Further, current research suggests that future atergy-prevention therapies will compensate for the absence of beneficial microbes.
The statements above, 4 true, most strongly support which of the following?
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