Which of the following methods can prove to be useful to avoid pregnancy caused as a result of rape or casual unprotected sexual intercourse?

Options

A. Insertion of diaphragm within 72 hours of rape
B. Administration of spermicidal jellies within 72 hours of rape
C. Administration of oestrogens rich pills within 72 hours of rape
D. Administration of combined rich pills within 72 hours of rape

Answer

To address the question regarding methods to avoid pregnancy resulting from rape or casual unprotected sexual intercourse, we can analyze the options provided based on their effectiveness and timing.

### Step-by-Step Solution:

1. **Understanding the Context**:
- The question pertains to emergency contraception methods that can be utilized after unprotected sexual intercourse or rape to prevent pregnancy.

2. **Evaluating the Options**:
- **Insertion of Diaphragm**:
- A diaphragm is a barrier method of contraception that is typically used before intercourse. Inserting it after unprotected intercourse would not be effective in preventing pregnancy, especially within the context of rape.
- **Administration of Spermicidal Jellies**:
- Spermicidal jellies are designed to kill sperm and are most effective when used before sexual intercourse. Using them after the act may not provide the necessary protection against pregnancy.
- **Administration of Estrogen**:
- Estrogen is generally used to address menstrual issues and is not specifically indicated for preventing pregnancy after unprotected intercourse.
- **Combined Oral Contraceptives (COCs)**:
- These pills, which contain both estrogen and progesterone, can be effective in preventing ovulation if taken within a certain time frame after unprotected intercourse. They can block ovulation and thus prevent pregnancy.

3. **Conclusion**:
- Among the options provided, the most effective method to avoid pregnancy after rape or casual unprotected sexual intercourse is the use of combined oral contraceptives (COCs), as they can prevent ovulation when taken within the appropriate time frame.

### Final Answer:
The method that can prove to be useful to avoid pregnancy caused as a result of rape or casual unprotected sexual intercourse is the administration of combined oral contraceptives (COCs) within a specified time after the event.