Assertion : The testes are situated outside the abdominal cavity within scrotum .
Reason : Lower temperature for the testis is necessary for spermatogenesis.
(a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
(b) If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
(c) If Assertion is True but the Reason is False .
(d) If both Assertion & Reason are False.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False .
D. If both Assertion & Reason are False.

Answer

To solve the question, we need to analyze the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "The testes are situated outside the abdominal cavity within the scrotum."
- This is true because the testes are located in the scrotal sac, which is outside the abdominal cavity.

2. **Understanding the Reason**:
- The reason states that "Lower temperature for the testis is necessary for spermatogenesis."
- This is also true because spermatogenesis, the process of sperm production, requires a temperature lower than the normal body temperature (37 degrees Celsius) to be effective.

3. **Analyzing the Relationship**:
- The assertion explains the anatomical position of the testes, while the reason explains the physiological necessity for that position (i.e., the need for a lower temperature for sperm production).
- Since the reason directly supports the assertion by explaining why the testes are located outside the abdominal cavity, we can conclude that the reason is a correct explanation of the assertion.

4. **Final Conclusion**:
- Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is (a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

### Final Answer:
(a) If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

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