Depo-provera are

Options

A. growth hormones
B. oestrogen derivative injections
C. progesterone-derivative injections
D. glucocorticoids

Answer

**Step-by-Step Solution:**

1. **Understanding Depo-Provera**: Depo-Provera is a contraceptive injection used primarily in females to prevent pregnancy. It is a long-term method of contraception.

2. **Duration of Effectiveness**: This injection is effective for about 10 to 12 weeks after administration. It is important to note that it must be taken within a specific timeframe to ensure its effectiveness.

3. **Mechanism of Action**: The primary mechanism by which Depo-Provera works is by preventing ovulation. This means that it stops the ovaries from releasing eggs, which is crucial for preventing pregnancy.

4. **Composition of Depo-Provera**: The main component of Depo-Provera is progesterone. While other contraceptive methods may contain estrogen or other hormones, Depo-Provera specifically contains a derivative of progesterone.

5. **Conclusion**: Based on the information gathered, we can conclude that Depo-Provera is classified as a progesterone derivative injection. Therefore, the correct answer to the question is option C: progesterone derivative injection.

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