Q: While the egg is developing, other changes are taking place in the uterus. it develops a thick lining that is full of what?


Read this paragraph and choose the correct option from the provided answers:

While the egg is developing, other changes are taking place in the uterus. It develops a thick lining that is full of tiny blood vessels. The lining prepares the uterus to receive a fertilized egg if fertilization actually takes place.

 Choices:

- large arteries

- white blood cells

- amniotic fluid

- tiny blood vessels


A:
tiny blood vessels