Question

randi is in the fifth week of pregnancy, which means that her baby is in the ____ period of prenatal development. fetus placenta embryo zygote

Explanation:

Prenatal development has three stages. The zygote stage is from conception to 2 weeks. The embryo stage is from 2 - 8 weeks. The fetus stage is from 9 weeks to birth. Randi is in the fifth week, so it's the embryo stage. The placenta is an organ, not a stage of prenatal development.

Answer:

embryo