Q: What is a sac filled with fluid or other material?


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

Cysts may develop in the ovaries. A cyst is a sac filled with fluid or other material. Ovarian cysts are usually harmless and often disappear on their own. However, some cysts may be painful and require surgery.

 Choices:

- a lesion

- Golgi apparatus

- a receptacle

- a cyst


A:
a cyst