The Hormone used as an oral contraceptive is

Options

A. Aldosterone
B. Cortisone
C. Progesterone
D. Testosterone

Answer

To determine the hormone used as an oral contraceptive, we will analyze the options provided and their roles in the body.

### Step-by-Step Solution:

1. **Identify the Hormones**: The hormones mentioned in the question are Aldosterone, Cortisone, Progesterone, and Testosterone.

2. **Evaluate Aldosterone**:
- Aldosterone is produced by the adrenal cortex.
- Its primary function is to regulate sodium and potassium levels in the kidneys.
- **Conclusion**: Aldosterone has no role in oral contraception.

3. **Evaluate Cortisone**:
- Cortisone is a steroid hormone that helps in the metabolism of carbohydrates, proteins, and fats.
- It is primarily involved in stress responses and has anti-inflammatory effects.
- **Conclusion**: Cortisone does not play a role in oral contraceptives.

4. **Evaluate Progesterone**:
- Progesterone is a hormone released after ovulation and is crucial for preparing the uterus for a potential pregnancy.
- It helps maintain the uterine lining and prevents further ovulation during pregnancy.
- **Conclusion**: Progesterone is used in oral contraceptives to prevent ovulation and thus inhibit fertilization.

5. **Evaluate Testosterone**:
- Testosterone is primarily produced in the testes and is responsible for male secondary sexual characteristics and muscle development.
- **Conclusion**: Testosterone does not have a role in oral contraception.

6. **Final Answer**: Based on the evaluations, the hormone used as an oral contraceptive is **Progesterone**.