A woman uses pills A to prevent pregnancy for birth control. These pills prevent the ovaries from releasing ovum into oviducts. Another woman uses a chemical B that kills the sperm and prevent pregnancy.
What do the pill A contains?

Options

A. Antacids
B. Sedatives
C. Enzymes
D. Hormones

Answer

To answer the question about what pill A contains, we can break down the information step by step.

### Step-by-Step Solution:

1. **Understanding the Purpose of Pill A**:
- Pill A is used for birth control and prevents pregnancy by stopping the ovaries from releasing an ovum into the oviduct.

2. **Mechanism of Action**:
- The primary function of Pill A is to inhibit ovulation. This means that it alters the normal hormonal signals that trigger the release of an egg from the ovaries.

3. **Hormones Involved**:
- The hormones that are primarily involved in regulating the menstrual cycle and ovulation are estrogen and progesterone. These hormones play a crucial role in preparing the body for potential pregnancy.

4. **Composition of Pill A**:
- Since Pill A is designed to prevent ovulation, it typically contains synthetic forms of these hormones (estrogen and progesterone) to mimic their effects and prevent the natural hormonal surge that leads to ovulation.

5. **Conclusion**:
- Therefore, Pill A contains hormones, specifically synthetic estrogen and progesterone, which work together to prevent the release of an ovum.

### Final Answer:
Pill A contains hormones (synthetic estrogen and progesterone).

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