The nursing instructor is presenting a class on the various classifications of twins. The instructor determines the session is successful after the students correctly choose which classification that indicates twins have separate amniotic sacs and placentas?

Amniotic sacs and Placenta

Explanation:

The placenta is an organ is connected to the covering of your womb during pregnancyThe child  and The placenta is associated by the umbilical cordThe baby is inside a bag of liquid called the amniotic sac, which is made of layersAmniotic sac is inward of these fetal layers, the amnion, encases the amniotic hole, containing  the baby and amniotic liquidThe external layer, the chorion, contains the amnion and is a piece of the placentaThe placenta is an organ that produced in your uterus during pregnancyThe  structure of placenta gives oxygen and nutrients to your developing baby and removes waste materials product from your child's blood