Final answer:
The correct answer is option d. The scrotum contains the testes, which are the male gonads where sperm are produced. The epididymis is where sperm mature and are stored, but it, along with the prostate and seminal vesicles, does not contain the testes.
Step-by-step explanation:
The scrotum is the anatomical structure that contains the testes. The testes are male reproductive organs responsible for sperm and testosterone production. Sperm are produced in the seminiferous tubules within the testes. Once produced, sperm go on to mature in the epididymis, which is also contained within the scrotum next to each testis.
After maturing, sperm are then stored here until ejaculation. When asking which of the following contains the testes, the correct answer would be 'D. scrotum'. Other structures such as the prostate and the seminal vesicles are involved in the production of seminal fluid, which is added to the sperm to create semen, but they do not contain the testes.