A. Asparagus is an excellent source of folate, a B-vitamin essential for preventing neural tube defects during pregnancy. Women planning to conceive are encouraged to consume folate-rich foods like asparagus, spinach, and fortified cereals or to take a folic acid supplement. B. Yogurt, while nutritious and rich in calcium and protein, does not provide significant amounts of folate needed for neural tube defect prevention. C. Chicken is a good source of protein and other nutrients but is not a primary source of folate or folic acid. D. Cashews are a healthy snack rich in fats and magnesium but do not provide a meaningful amount of folate to help prevent neural tube defects.