Folic Acid Supplements Have Become Especially Important for Pregnant Women

Folic acid supplements have become especially important for pregnant women because ________.

A) folic acid supplies vitamins that only pregnant women can use
B) the fetus makes high levels of folic acid
C) folic acid deprivation is associated with neural tube defects in a fetus
D) folic acid deprivation is a cause of heart abnormalities in a newborn