Final answer:
Semen is composed of spermatozoa, seminal plasma, and gland secretions, specifically from the seminal vesicles, prostate gland, and bulbourethral glands that provide essential compounds for sperm function.
Step-by-step explanation:
Semen is composed of spermatozoa, seminal plasma, and gland secretions. The correct answer to the question is C) Spermatozoa, seminal plasma, gland secretions.
Spermatozoa, or sperm, are the male gametes responsible for fertilization, and they are produced in the testes. Seminal plasma, which accounts for the majority volume of semen, is a mix of secretions from the accessory glands associated with the male reproductive system, including the seminal vesicles, prostate gland, and bulbourethral glands.
These secretions provide nutrients, electrolytes, pH buffering, and other compounds that are essential for sperm viability and functionality. Testosterone is a hormone that plays a crucial role in sperm production, but it is not a direct component of semen. Therefore, the other ingredients mentioned in the question, such as testosterone and prostatic fluid, are not accurate in this context.