4.Which of the following is the most essential nutrient for a woman during her initial stages of pregnancy to prevent birth defects?(a) Thiamin(b) Folic acid(c) Vitamin C(d) Vitamin EAns:(b) Folic acid

4.Which of the following is the most essential nutrient for a woman during her initial stages of pregnancy to prevent birth defects?

(a) Thiamin

(b) Folic acid