Which of the following can lead to a menstrual cycle?
AFertilization of egg
BUnfertilized egg
CImproper sleep
DStudy pressure
Answer:
B. Unfertilized egg
Read Explanation:
The menstrual cycle is a natural phenomenon. It arises as the unfertilized egg needs to be released along with the thick endometrium that was formed in anticipation of the would-be embryo.
