Which hormone is produced by placenta?
The placenta produces two steroid hormones - oestrogen and progesterone. Progesterone acts to maintain pregnancy by supporting the lining of the uterus which provides the environment for the foetus and the placenta to grow. It prevents the shedding of this lining which would result in pregnancy loss. It also suppresses the uterine wall’s ability to contract, which is important in preventing labour from occurring before the end of pregnancy. Hence option D is correct.