Answer the following question given this paragraph: 

The prostate gland secretes a fluid that mixes with sperm to help form semen. Semen is a whitish liquid that contains sperm. It passes through the urethra and out of the body.


Q: What gland secretes a fluid that mixes with sperm to help form semen?

 Choices:

- testicle

- thy·mus

- thyroid

- prostate gland

A:
prostate gland
