Answer:
The placenta is a vital organ involved in the development of the fetus. It provides nutrients and oxygen to the fetus, and removes waste products from the fetus. Additionally, the placenta produces hormones that are essential for fetal growth and development. It also serves as a barrier against bacteria and other pathogens that could potentially harm the fetus. Finally, the placenta plays a vital role in the transfer of antibodies from the mother to the fetus, which helps to protect the fetus from infection.