Question

First menstrual cycle is

• A. Parturition
• B. Menopause
• C. Menarche
• D. Implantation

Answer 1

The correct option is C Menarche

• The first menstrual cycle that occurs during puberty at the age of $11-14$ years is known as menarche.
• The last menstrual cycle or cessation of the menstrual cycle at the age of $45-50$ years is known as menopause.
• Menarche marks the beginning of reproductive life and menopause marks the end of the reproductive cycle.

Implantation is the attachment of blastocyst to the endometrium of the uterus. It occurs after around 7 days after fertilization.

• Parturition is the expulsion of the baby from the mother's womb after completion of the gestation period (9 months).
  

Hence, the correct option is C.