Answer: Folic Acid
Step-by-step explanation:
Folic acid is one of the supplements recommended and given to women during antinatal care so as to prevent congenital malformations such as neural tube defects and it is recommended to start taking these supplements at least few months before conception becomes the store can easily get depleted during pregnancy because of increased need due to the presence of the foetus.
When this is not done, children born to such women would be at an increased risk of developing neural tube defects such as spinal bifida and even meningocoel amongst others