The substance used in the birth control pills is

Options

A. Tetracycline
B. Sulphadiazine
C. Novestrol
D. Penicillin

Answer

**Step-by-Step Solution:**

1. **Understanding Birth Control Pills**: Birth control pills, also known as oral contraceptives, are medications taken by women to prevent pregnancy. They contain hormones that regulate the reproductive system.

2. **Identifying the Key Hormones**: The primary hormones used in birth control pills are synthetic versions of estrogen and progesterone. These hormones are naturally produced in the ovaries and play a crucial role in the menstrual cycle and ovulation.

3. **Analyzing the Options**: The question provides several options: Tetracycline, Sulfadiazine, Novestral, and Penicillin. We need to identify which of these is associated with birth control pills.

4. **Evaluating Each Option**:
- **Tetracycline**: An antibiotic, not related to birth control.
- **Sulfadiazine**: Another antibiotic, not related to birth control.
- **Novestral**: A synthetic hormone that mimics estrogen and is used in some birth control pills.
- **Penicillin**: An antibiotic, not related to birth control.

5. **Conclusion**: Based on the analysis, Novestral is the substance used in birth control pills. Therefore, the correct answer is option C: Novestral.

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