Answer the following question: Answer the following question given this paragraph: 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. Q: What is a sac filled with fluid or other material? Choices: - a lesion - Golgi apparatus - a receptacle - a cyst A:
Answer:
a cyst