Answer: Before about week 8 of pregnancy, a doctor may refer to the fetus as an embryo. The heart of an embryo starts to beat from around 5–6 weeks of pregnancy. Also, it may be possible to see the first visible sign of the embryo, known as the fetal pole, at this stage.
The answer I think is D all of the above
D all of the above! sorry if its wrong
Answer:
you need goggle
Explanation:
because no one is gonna have the level of engaging enthusiasm to read this question so please use goggle or ask a buddie.