Answer:
Explanation:
1) oligomenorrhea : It refers to infrequent menstrual periods/ menstrual cycles that occur at a period longer than 35 days. It can result from various factors such as, stress, excessive exercise, etc.
2) menopause : It refers to the end of a woman's menstrual cycles. The average age of menopause is around 51 years.
3) menarche: It refers to the first occurrence of menstruation in a person's life, during puberty.
4) Premenstrual syndrome (PMS) It refers to a changes in mood, physical, emotional, and behavioral symptoms The changes come 1 to 2 weeks before your period.
Menarche is the term for the beginning of menstruation or the first menstrual period, indicating the start of ovulation in females, typically occurring around the average age of 12.4 years in the U.S. Therefore, the correct answer is option 3) menarche.
The beginning of menstruation is referred to as menarche, which is the first menstrual period for a female indicating that her body has begun the process of ovulation. Menarche is one of the key developmental milestones in female puberty and typically signifies the body's ability to reproduce. In the United States, the average age for menarche is 12.4 years, although it can occur in girls as young as 8 or as old as 16. Environmental and genetic factors can cause variations in the age of onset. Menstruation is a regular part of the menstrual cycle where the inner lining of the uterus is shed if no pregnancy has occurred.
