Answer the following question given this paragraph: 

The external female reproductive structures are referred to collectively as the vulva . They include the labia (singular, labium ), which are the “lips” of the vulva. The labia protect the vagina and urethra, both of which have openings in the vulva.


Q: What do the external female reproductive structures are collectively referred to?

 Choices:

- cervix

- Clitoris

- endometrium

- vulva

A:
vulva
