The first menstrual flow begins at puberty and is termed:

Options

A. Menarche
B. Menopause
C. Menstruation
D. None of these

Explanation

The first menstrual flow begins at puberty and is termed:

1. **Understanding the Question**: The question asks for the term used to describe the first menstrual flow that occurs during puberty.

2. **Identifying the Options**: The options provided are:
- Option 1: Menarche
- Option 2: Menopause
- Option 3: Menstruation
- Option 4: Ovulation

3. **Analyzing Each Option**:
- **Option 1: Menarche**: This term refers specifically to the first occurrence of menstruation, which is indeed the correct answer.
- **Option 2: Menopause**: This term refers to the time in a woman's life when menstrual cycles permanently cease, typically occurring in their 40s or 50s. Therefore, this option is incorrect.
- **Option 3: Menstruation**: This term describes the regular monthly cycle of bleeding that occurs in women, but it does not specifically refer to the first occurrence. Thus, this option is also incorrect.
- **Option 4: Ovulation**: This refers to the release of an egg from the ovary and is not related to the first menstrual flow. Hence, this option is incorrect as well.

4. **Conclusion**: Based on the analysis, the correct term for the first menstrual flow that begins at puberty is **Menarche**.