Sperm Storage in Male Reproductive System

Steps:

• Identify key structures: testes produce sperm, epididymis stores it, vas deferens transports it, accessory glands add fluids.
• Examine diagram labels for these functions.
• Match "may contain sperm" to storage/transport paths, excluding production sites or fluid-only glands.
• Select structure along sperm pathway post-production.

Why D is correct:

• Epididymis stores mature sperm before transport, per reproductive anatomy definitions.

Why the others are wrong:

• A: Seminal vesicle produces seminal fluid, no sperm storage.
• B: Prostate gland secretes fluid for semen, lacks sperm.
• C: Urethra conducts urine/semen but holds sperm only transiently during ejaculation.

Final answer: D