Question

supplementation is associated with a lower incidence of neural tube defects.
select one
a. iron
b. folate
c. calcium
d. cobalamin
e. iodine

Explanation:

Neural tube defects are strongly associated with folate (vitamin B9) deficiency. Folate supplementation, especially during pregnancy, is known to significantly reduce the risk of neural tube defects. Iron is related to anemia, calcium to bone health, cobalamin (B12) to nerve function and blood cell formation, and iodine to thyroid function—none of these have the primary association with neural tube defect prevention like folate.

Answer:

B. Folate