Which of the following is a major component of oral contraceptive pills ?

Options

A. HCG
B. LH
C. FSH
D. Progesterone

Answer

To solve the question regarding the major components of oral contraceptive pills, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Oral Contraceptive Pills**:
- Oral contraceptive pills are medications taken by women to prevent pregnancy. They are commonly referred to as birth control pills.

2. **Identifying the Components**:
- The primary components of oral contraceptive pills are hormones. The two main hormones used in these pills are estrogen and progesterone.

3. **Function of Estrogen and Progesterone**:
- Estrogen helps to regulate the menstrual cycle and maintain pregnancy.
- Progesterone plays a crucial role in preparing the uterus for a fertilized egg and maintaining the early stages of pregnancy.

4. **Mechanism of Action**:
- These hormones work together to prevent ovulation, which means that no eggs are released from the ovaries.
- Additionally, they thicken the cervical mucus, making it difficult for sperm to reach any egg that may be present.

5. **Conclusion**:
- Therefore, the major components of oral contraceptive pills are estrogen and progesterone.

### Final Answer:
The major components of oral contraceptive pills are **estrogen and progesterone**.

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