First menstrual cycle is

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the term that refers to the first menstrual cycle in females.

2. **Identifying Key Terms**: The key terms in the options provided are:
- A. Parturation
- B. Menopause
- C. Menarche
- D. Implantation

3. **Defining Each Option**:
- **Parturation**: This refers to the act of giving birth.
- **Menopause**: This is the time in a woman's life when menstrual cycles permanently cease, typically occurring in middle age.
- **Menarche**: This is the term used to describe the first occurrence of menstruation, marking the beginning of a female's reproductive years.
- **Implantation**: This is the process by which a fertilized egg attaches to the lining of the uterus.

4. **Analyzing the Options**:
- Since the question specifically asks for the first menstrual cycle, we can eliminate Parturation and Menopause as they refer to different stages in a woman's reproductive life.
- Implantation is also not relevant as it pertains to the early stages of pregnancy.

5. **Selecting the Correct Answer**:
- The only option that directly relates to the first menstrual cycle is **C. Menarche**. This is the correct term for the first menstrual period, which typically occurs between the ages of 11 and 14, but can vary.

6. **Final Conclusion**: Therefore, the answer to the question is **C. Menarche**.

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