The onest of the reproductive stage is called______

Options

A. menstruation
B. menarche
C. menopause
D. puberty

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the onset of the reproductive age in organisms.

2. **Analyzing the Options**: The options provided are:
- Menstruation
- Menarch
- Menopause
- Puberty

3. **Evaluating Each Option**:
- **Menstruation**: This refers to the monthly shedding of the uterine lining and the unfertilized egg in females. It is not the onset of reproductive age but rather a process that occurs after reproductive age has begun.

- **Menarch**: This term specifically refers to the first occurrence of menstruation. While it is related to the onset of reproductive capability, it does not encompass the entire reproductive stage.

- **Menopause**: This is the cessation of menstruation and reproductive capability in females, marking the end of the reproductive stage rather than the beginning.

- **Puberty**: This is the developmental stage during which individuals reach sexual maturity and the ability to reproduce. It marks the onset of reproductive age for both males and females.

4. **Identifying the Correct Answer**: Based on the analysis, the term that best describes the onset of reproductive age is **puberty**.

5. **Final Answer**: The onset of the reproductive stage is called **puberty**.

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