Ans. (C). Oogenesis starts in development and then is halted until puberty.
Oogenesis can be defined as a process of differentiation of egg cell (ovum), into a mature ovum that further develops after fertilization. In humans, oogenesis begins in the early stage of embryonic development, during whcih primary oocyte performs meiosis I and forms secondary oocyte. Meiosis in secondary oocyte gets arrested at metaphase II until puberty.
Thus, the correct answer is option (C).
