The correct option is
C Is the region where foetus receives nourishment from mother's blood
The placenta is the highly specialised organ of pregnancy that supports the normal growth and development of the foetus. It provides thermoregulation to the foetus, waste elimination, and gas exchange via the mother's blood supply, fight against internal infection and produce hormones to support pregnancy. The placenta provides oxygen and nutrients to the growing foetus and removes waste products from the foetus's blood. The placenta attaches to the wall of the uterus, and the foetus's umbilical cord develops from the placenta.