The sudden increase in which of the following hormone is directly responsible for the release of ovum from the Graafian follicle ?

Options

A. LH
B. FSH
C. Estrogen
D. Progesterone

Answer

To solve the question about which hormone is directly responsible for the release of the ovum from the Graafian follicle, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which hormone's sudden increase leads to the release of the ovum from the Graafian follicle during the ovulation process.

2. **Identifying Key Hormones**: The options given are:
- Luteinizing Hormone (LH)
- Follicle Stimulating Hormone (FSH)
- Estrogen
- Progesterone

3. **Role of Each Hormone**:
- **Luteinizing Hormone (LH)**: This hormone is crucial for triggering ovulation. A surge in LH levels causes the mature Graafian follicle to release the ovum.
- **Follicle Stimulating Hormone (FSH)**: This hormone primarily stimulates the growth and maturation of ovarian follicles but does not directly cause ovulation.
- **Estrogen**: While it plays a role in the menstrual cycle and the development of secondary sexual characteristics, it does not directly trigger ovulation.
- **Progesterone**: This hormone is involved in preparing the uterus for pregnancy after ovulation but does not cause the release of the ovum.

4. **Conclusion**: Based on the roles of these hormones, the sudden increase in **Luteinizing Hormone (LH)** is directly responsible for the release of the ovum from the Graafian follicle.

### Final Answer:
The hormone responsible for the release of the ovum from the Graafian follicle is **Luteinizing Hormone (LH)**.

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