Q. Which one of the following is the most likely root cause why mensturation is not taking place in regularly cycling human female?

Q. Which one of the following is the most likely root cause why mensturation is not taking place in regularly cycling human female?

(a) Retention of well-developed corpus luteum

(b) Fertilization of the ovum

(c) Maintenance of the hypertrophical endometrial lining

(d) Maintenance of a high concentration of sex hormones in the bloodstream

Solution :

Correct option : C. Fertilization of the ovum
Most likely cause why menstruation is not taking in regularly cycling human female is fertilization of ovum. Hence, the answer is fertilization of the ovum.