Progesterone pills helps in preventing pregnancy by not allowing

Options

A. Ova formation
B. Fertilization
C. Phagocytosis of sperm
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding Progesterone Pills**: Progesterone pills are a type of oral contraceptive used to prevent pregnancy. They contain the hormone progesterone, which plays a crucial role in regulating the menstrual cycle and maintaining pregnancy.

2. **Mechanism of Action**: These pills work primarily by preventing ovulation. When taken correctly, they inhibit the ovary's ability to release an egg (ovum), thus preventing the possibility of fertilization.

3. **Evaluating the Options**:
- **A. Over formation**: This option refers to the prevention of ovulation. Progesterone pills prevent the ovaries from releasing eggs, which is a key mechanism in preventing pregnancy.
- **B. Fertilization**: While progesterone pills do reduce the chances of fertilization by preventing ovulation, they do not directly prevent fertilization if ovulation occurs.
- **C. Phagocytosis of sperm**: This option is not relevant to the action of progesterone pills. Phagocytosis of sperm is a process that occurs in the female reproductive tract but is not directly influenced by the intake of progesterone pills.
- **D. All of these**: Since not all options are correct, this cannot be the right answer.

4. **Conclusion**: Based on the analysis, the correct answer is **A. Over formation**, as progesterone pills primarily prevent the release of eggs from the ovaries, thus preventing pregnancy.