The correct option is A Ovarian follicles
An ovarian follicle is a spherical cellular aggregation found in the ovary. Each ovarian follicle contains a single oocyte (immature egg or ovum).
The oviduct is the fallopian tube and is lined with ciliated epithelia. It is the site of fertilization.
The uterus is the hollow, pear-shaped organ. It is the site for implantation and embryo development.
The vagina is muscular, narrow canal.
Thus, the correct answer is option A.