Final answer:
The correct understanding of nutritional recommendations during pregnancy is the need to increase intake of iron-rich foods to support fetal growth and maternal health. Other important nutrients include folic acid, calcium, and omega-3 fatty acids, and a balance of proteins, lipids, and carbohydrates.
Step-by-step explanation:
The statement that indicates an understanding of the nutritional recommendations during pregnancy is D) "I should increase my intake of iron-rich foods." This is because pregnant women have an increased need for iron to support the growth of the fetus and the placenta and to increase their own blood volume. Additionally, a balanced diet during pregnancy should include adequate calories, proteins, lipids, vitamins, and minerals. Specifically, nutrients like folic acid, calcium, omega-3 fatty acids, and iron are especially important. While fats should not be completely avoided, as they provide necessary calories and support fetal growth, saturated fats should be limited. An increase in calcium intake is helpful for bone health but it does not prevent anemia; iron prevents anemia. Limiting protein can be counterproductive as it is vital for the baby's growth. Folate intake is recommended to prevent neural tube defects and support overall fetal development.