Mention the name of the organ shed off during the menstrual cycle once a female reaches puberty, the uterus sheds an unfertilized egg along with the "blank"

The question is asking us to mention the name of the organ shed off during the menstrual cycle. Specifically, it says, once a female reaches puberty, the uterus sheds an unfertilized egg along with the uterine wall - that is the correct answer. The Uterine wall is how the female body prepares for pregnancies, and it is there to protect and nurture the child - so if the pregnancy does not occur, it is shed.