The correct option is C urethral meatus
Sperms along with the secretions of accessory glands (seminal plasma) is called semen. It exits (leaves) the body through the opening of urethra called urethral meatus.
Anus is the opening at the lower end of the intestine through which defecation occurs.
Cloaca is not found in human beings. It is a common chamber into which the intestinal, urinary, and genital tracts open. Cloaca opens outside through the cloacal aperture. It is present in most of the vertebrates.