The Nurse Is Teaching a Class About Embryonic and Fetal

The nurse is teaching a class about embryonic and fetal development to couples in the early stage of pregnancy. For which reason does the nurse emphasize the first 8 weeks of gestation?

A) Pregnancies often abort before or at this time of development.
B) Lack of size and movement prevents confirmation of pregnancy.
C) All organ systems are developing during this period.
D) Factors that can interrupt the pregnancy are no longer a concern.