A: Surgical method of contraceptions is terminal method to prevent any more pregnancies.
R: Surgical methods of contraception prevent gamete formation.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).
B. If both Assertion & Reason are true but the reasons is not the correct expalanation of the assertion, then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4).

Answer

### Step-by-Step Text Solution:

1. **Understanding the Assertion (A)**: The assertion states that "surgical method of contraception is a terminal method to prevent any more pregnancies." This means that surgical methods are designed to be permanent solutions for preventing future pregnancies.

2. **Understanding the Reason (R)**: The reason states that "surgical methods of contraception prevent gamete formation." This implies that these methods stop the production of gametes (sperm in males and ova in females).

3. **Identifying Surgical Methods**: There are two main surgical methods of contraception:
- **Tubectomy**: This is a procedure performed on females where the Fallopian tubes are cut and tied. It prevents the sperm from reaching the egg but does not stop the ovaries from producing eggs (gametes).
- **Vasectomy**: This is a procedure performed on males where the vas deferens (the tube that carries sperm) is cut and tied. This prevents sperm from being included in the ejaculate but does not stop the seminiferous tubules from producing sperm (gametes).

4. **Analyzing Gamete Formation**: In both tubectomy and vasectomy, while the pathways for the gametes are blocked, the production of gametes continues.
- In tubectomy, the ovaries still produce ova.
- In vasectomy, the seminiferous tubules still produce sperm.

5. **Conclusion**: The assertion is true because surgical methods are indeed terminal and irreversible methods of contraception. However, the reason is false because these surgical methods do not prevent the formation of gametes; they only prevent the gametes from meeting.

6. **Final Answer**: The correct conclusion is that the assertion (A) is true, while the reason (R) is false.