The correct option is D Hymen
The female external genitalia include the mons pubis, labia majora, labia minora, vaginal introitus(opening to the vagina), hymen, and clitoris.
The opening of the vagina is often covered/blocked partially by a membrane called the hymen.
Mons pubis is a pad of fatty tissue, shaped like an upside down triangle. It extends from top of the pubic hairline to clitoris.Mons pubis gets covered by pubic hair on attaining puberty.
The sides of the vulva have two smaller fleshy folds- labia majora (greater lips), which are a pair of fleshy folds of skin extending from the mons pubis, surrounding the vaginal and urethral orifices. They are homologous to the scrotum. The labia minora (lesser lips) that are paired folds of skin under the labia majora. It contains sebaceous glands.