Q: What allows for a large and mature fetus before birth,  resulting from a long period of fetal growth in the uterus?


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

The placenta permits a long period of fetal growth in the uterus. As a result, the fetus can become large and mature before birth. This increases its chances of surviving.

 Choices:

- the vagina

- the cervix

- the ovaries

- the placenta


A:
the placenta