The correct option is
D All of the above
The human semen is the fluid which is released through the penis during the process of copulation. The human semen contains the sperms which are the male gametes produced in the testes. The semen also contains the secretions of the accessory glands like the fructose, calcium ions, enzymes which are required for the survival of the sperms in the vaginal tract of the female. Thus, the correct answer is option D.