Correct Answer: B
Explanation:
The tunica albuginea is the fibrous covering of the testis.
It is a dense blue-grey membrane, composed of bundles of white fibrous tissue which interlace in every direction.
OR
Tunica albuginea is whitish membrane within the penis that surrounds the spongy chambers (corpora cavernosa). The tunica albuginea helps to trap the blood in the corpora cavernosa, thereby sustaining erection of the penis.