Every year, children are born with neural tube defects, which can prevent full
formation of the brain or closing of the base of the spine, causing paralysis. A
primary cause was found to be a deficiency of folic acid, an essential nutrient,
in the diets of pregnant women. To reduce the incidence of these birth defects,
the country of Islandia began to require folic acid supplementation of all wheat
flour. This ensured that everyone received adequate amounts of folic acid in
their diets, thereby preventing neural tube defects in children.
Each of the following, if true, helps to explain how the supplementation of wheat
flour could have prevented neural tube defects in children EXCEPT:
(A) Pregnant women whose families did not traditionally eat food containing folic
acid found it easier to supplement their diets with the nutrient when it was already
contained in a staple such as wheat flour.
(B) Aware that wheat flour had additional health benefits, Islandia residents
consumed larger amounts of wheat flour than before the supplementation began.
(C) The supplementation of folic acid caused wheat flour distributors to more
aggressively compete for customers, who they expected to seek out their products for health reasons.
(D) Pregnant women who ignored recommended supplements such as folic acid
could not avoid including wheat flour in their daily diet.
(E) Prompted by the country's emphasis on folic acid supplementation, pregnant
women sought out other foods that naturally contain folic acid.
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