A pouch of skin containing the testicles.

• A. Scrotum
• B. Urethra
• C. Epididymis
• D. Penis

Answer: (A)

The outside pouch that holds the testes is the scrotum. The scrotum is a loose sac of skin and muscle that hangs outside the body to keep the testes cooler than core body temperature, which is important for making healthy sperm. It also houses the testes and surrounding structures like the epididymis where sperm mature. The other options refer to different structures: the urethra is the duct that semen and urine travel through to exit the body, the epididymis is the coiled tube where sperm mature, and the penis is the external organ through which urine and semen leave the body.