Menopause is caused by a natural decline in the secretion of

Options

A. LH
B. FSH
C. estrogen
D. progesterone

Answer

**Step-by-Step Solution:**

1. **Understanding Menopause**: Menopause is defined as the permanent cessation of the menstrual cycle in females. This typically occurs in women during their late 40s to early 50s.

2. **Hormonal Changes**: The menstrual cycle is regulated by various hormones, primarily those produced by the ovaries. The key hormones involved are estrogen and progesterone.

3. **Role of Ovaries**: The ovaries are the primary reproductive organs in females. They produce eggs (ova) and secrete hormones such as estrogen and progesterone.

4. **Decline in Hormone Secretion**: As women age, the number of follicles in the ovaries decreases. This leads to a decline in the secretion of ovarian hormones, specifically estrogen and progesterone.

5. **Impact of Hormone Decline**: The reduction in estrogen and progesterone levels results in the cessation of the menstrual cycle, leading to menopause.

6. **Conclusion**: Therefore, menopause is caused by a natural decline in the secretion of ovarian hormones, particularly estrogen and progesterone.

**Final Answer**: Menopause is caused by a natural decline in the secretion of **estrogen and progesterone**.

---