The correct answer is A. Prostate.
The prostate is a gland in males that surrounds the urethra, the tube that carries urine out of the body. It is about the size of a walnut and is located below the bladder. The prostate produces a fluid that is part of semen.
The seminal vesicles are two glands that are located behind the bladder. They produce a fluid that contains fructose, which provides energy for sperm.
The Bartholin glands are two glands that are located near the opening of the vagina. They produce a fluid that helps to lubricate the vagina during sexual intercourse.
The vas deferens are two tubes that carry sperm from the testicles to the ejaculatory ducts.
I hope this helps!