The rete testis is a network of tubules located in the testes. It connects the seminiferous tubules, where sperm are produced, to the efferent ducts that lead to the epididymis. The seminiferous tubules are the sites of sperm production, and the rete testis serves as the pathway through which sperm move from the seminiferous tubules to the epididymis for further maturation.
Thus, the correct answer is Seminiferous tubules.