What type of blood does the umbilical vein carry?

The umbilical vein is responsible for carrying oxygenated blood from the placenta to the fetus. This is crucial during pregnancy as it supplies the developing fetus with the necessary oxygen and nutrients required for growth and development. The oxygen-rich blood from the placenta is part of the maternal circulation and is delivered to the fetus through the umbilical vein, while deoxygenated blood is transported back to the placenta through the umbilical arteries. Thus, the correct answer highlights the primary function of the umbilical vein in transporting oxygenated blood, which is essential for fetal health and development.