Final answer:
The spermatic cord does not have defined "layers" like the testes do, but is composed of several structures including ducts, blood vessels, and nerves. option b.
Step-by-step explanation:
The spermatic cord contains several structures as it passes upward from the testes, but it does not have defined "layers" like the protective coverings of the testes themselves. The question may be slightly confusing as there is a distinction between the layers of the testes and the weaves of the spermatic cord. The testes are enclosed in two main layers of tissue: the outer tunica vaginalis, which is a serous membrane with a parietal and a thin visceral layer, and the tunica albuginea, which is a tough layer of dense connective tissue. The spermatic cord, however, comprises various ducts, blood vessels, and nerves, not discrete layers like the testes. Therefore, the question referencing layers of the spermatic cord does not directly correspond to the internal anatomical structure.