Condoms are one of the most popular contraceptives because of the following reasons :

Options

A. These are effective barriers for insemination
B. They do not interfere with coital act
C. Theses help in reducing the risk of STDs
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Condoms**: Condoms are a form of barrier contraceptive that prevent sperm from entering the female reproductive tract. They can be used by both males and females.

2. **Mechanism of Action**: Male condoms are typically made of thin rubber and are worn over the penis during intercourse. Female condoms cover the vagina or cervix. This physical barrier prevents the sperm from reaching the ovum, thus preventing fertilization.

3. **Effectiveness as a Barrier**: Condoms are effective in preventing insemination by blocking the passage of sperm. This makes them a reliable form of contraception when used correctly.

4. **Non-Interference with Coital Act**: Condoms do not interfere with the sexual act itself. They can be easily used during intercourse without causing significant disruption to the experience.

5. **Protection Against STDs**: One of the significant advantages of using condoms is their ability to reduce the risk of sexually transmitted diseases (STDs), including HIV/AIDS. This makes them not only a contraceptive method but also a protective measure for sexual health.

6. **Conclusion**: Given the reasons outlined—effectiveness as a barrier, non-interference with the coital act, and protection against STDs—the correct answer to the question is that condoms are popular contraceptives for all of the above reasons.

**Final Answer**: All of the above (Option 4).

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