Which name refers to the temporary organ that develops in the uterus during pregnancy?
a. zygote
b. placenta
c. umbilical cord
d. amniotic sac

b. placenta

Explanation:

The placenta is an organ formed during pregnancy whose main role is to promote communication between mother and fetus and thus ensure the ideal conditions for the development of the fetus. The main functions of the placenta are:

The placenta is a fundamental organ for the development of the baby, however during pregnancy may occur unwanted changes in the placenta, bringing risks and complications for the mother to the baby.

i think the answer is d.