A Steroid that prevents fertility is

Options

A. Estrogen
B. Cholesterol
C. Diosgenin
D. Testosterone

Answer

To solve the question "A Steroid that prevents fertility is," we will analyze each of the provided options step by step.

### Step 1: Analyze the First Option - Estrogen
- **Explanation**: Estrogen is a hormone primarily involved in the development and regulation of the female reproductive system. It plays a crucial role in the menstrual cycle and reproductive health.
- **Conclusion**: Estrogen does not prevent fertility; rather, it is essential for reproductive functions.

### Step 2: Analyze the Second Option - Cholesterol
- **Explanation**: Cholesterol is a type of lipid that serves as a precursor for the synthesis of steroid hormones. It is not a steroid that directly affects fertility.
- **Conclusion**: Cholesterol does not prevent fertility; it is involved in hormone production.

### Step 3: Analyze the Third Option - Dioxazine
- **Explanation**: Dioxazine is a steroid that is known to have properties that can prevent fertility. It acts on the reproductive system and can inhibit ovulation or sperm production.
- **Conclusion**: Dioxazine is a steroid that prevents fertility, making it a correct answer.

### Step 4: Analyze the Fourth Option - Testosterone
- **Explanation**: Testosterone is the primary male sex hormone and is crucial for the development and regulation of the male reproductive system. It promotes sperm production and male secondary sexual characteristics.
- **Conclusion**: Testosterone does not prevent fertility; it is essential for male reproductive health.

### Final Answer:
Based on the analysis of all options, the correct answer is **Dioxazine**, as it is the steroid that prevents fertility.

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