Question

which dietary change would be best for a woman who is expecting her first child?
increasing legumes and soy products
increasing calories and carbohydrates
increasing iron - rich foods and vitamin supplements
increasing water and foods with vitamins d and b12

Explanation:

During pregnancy, a woman needs increased iron to support fetal development and prevent anemia, and vitamin supplements (especially folic acid, etc.) are often recommended. Increasing legumes/soy is good but not the most critical for pregnancy dietary needs. Increasing calories/carbohydrates isn't the best focus as balanced nutrition with key nutrients like iron and vitamins is more important. Increasing water and vitamins D/B12 is less critical than iron and appropriate vitamin supplements for pregnancy. So the best choice is increasing iron - rich foods and vitamin supplements.

Answer:

increasing iron - rich foods and vitamin supplements