The correct answer is "scrotum." The scrotum is a sac of skin that holds the testes.
The name of the sac that holds the testes is the scrotum. To arrive at this answer, you can either recall information if you are already familiar with human anatomy, or you can use the process of elimination by considering the other options provided. In this case, the prostate is a gland, the urethra is the tube that carries urine and semen out of the body, and the epididymis is a structure that lies on top of the testes. Therefore, the only remaining option is the scrotum, which is the correct answer.
