The correct option is B Ovary
Corpus luteum
After ovulation, the granulosa cells and interstitial cells of the Graffian follicle form a mass of large and yellowish conical cells called the corpus luteum in the ovary. It secretes a large amount of progesterone for the maintenance of the endometrium lining for pregnancy.
Ovary
Ovaries are the primary sex organs in females that produce the female gamete (ovum) and steroid hormones, like estrogens and progesterone.
Accessory ducts
The oviducts (fallopian tubes), uterus, and vagina constitute the female accessory ducts.
Final answer
(C) Ovary