Which of the following statements is not true w.r.t. vasectomy or tubal ligation ?

Options

A. It is more difficult than vasectomy and is even more difficult to reverse
B. No ovulation occurs, hence no fertilization is possible
C. It involves ligation of both fallopian tubes
D. The failure rate of this approach is almost zero percent

Explanation

To determine which statement is not true with respect to vasectomy or tubal ligation (also known as tubectomy), we can analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understand the Procedures**:
- **Vasectomy**: This is a surgical procedure for male sterilization where the vas deferens (the tube that carries sperm) is cut and tied, preventing sperm from entering the semen.
- **Tubal Ligation (Tubectomy)**: This is a surgical procedure for female sterilization where the fallopian tubes are cut and tied, preventing the egg from traveling from the ovaries to the uterus.

2. **Analyze Each Statement**:
- **Option 1**: "It is more difficult than vasectomy and is even more difficult to reverse."
- This statement is true. Tubal ligation is generally considered more complex than vasectomy and is indeed more difficult to reverse.

- **Option 2**: "No ovulation occurs, hence no fertilization is possible."
- This statement is not true. Tubal ligation does not stop ovulation; it only prevents the egg from reaching the uterus. The ovaries still produce eggs, so ovulation occurs. Therefore, fertilization can still happen if the egg meets sperm outside the fallopian tubes.

- **Option 3**: "It involves ligation of both fallopian tubes."
- This statement is true. Tubal ligation involves the cutting and tying of both fallopian tubes.

- **Option 4**: "The failure rate of this approach is almost 0%."
- This statement is also true. Tubal ligation and vasectomy are among the most effective forms of contraception, with very low failure rates.

3. **Conclusion**:
- The statement that is not true with respect to vasectomy or tubal ligation is **Option 2**: "No ovulation occurs, hence no fertilization is possible."

### Final Answer:
**Option 2** is the statement that is not true with respect to vasectomy or tubal ligation.

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