At which stage of the development, ovum is released from the ovary of human female?
a)	Primary oocyte	b)	Oogonium	c)	Secondary oocyte	d)	Ootid

(c)

Ovulation (release of egg or ovum from ovary into body cavity) involves the extrusion of a secondary oocyte from the ovary. Actually by 10-14 days after the first day of menstruation, only one follicle has contained its growth to become a fully mature Graafian follicle, while other follicles regress through a process called follicle atresia. Under proper hormonal stimulation, Graafian follicle rupture and extrude its oocyte into the uterine tube in the process of ovulation.