A : New cultivar before release is tested for at least growing seasons.
R : Testing is performed at only one agroclimatic zone is different seasons.

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 and the reason is not the correct explanation 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 Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that a new cultivar must be tested for at least three growing seasons before its release. This is a standard practice in agricultural science to ensure that the cultivar is viable and performs well under different conditions.

2. **Importance of Testing**:
- Testing a new cultivar involves evaluating its yield, quality, and disease resistance. These parameters are crucial to determine if the cultivar is suitable for commercial release.

3. **Understanding the Reason (R)**:
- The reason provided states that testing is performed at only one agroclimatic zone in different seasons. This implies that the testing is limited to a single environmental condition, which is not comprehensive.

4. **Evaluating the Reason**:
- The reason is false because testing should ideally be conducted across multiple agroclimatic zones and not just one. This ensures that the cultivar can adapt to various environmental conditions and is robust enough for widespread cultivation.

5. **Conclusion**:
- Since the assertion is true (new cultivars must be tested for multiple growing seasons) and the reason is false (testing should not be limited to one agroclimatic zone), the correct relationship is that the assertion is true, but the reason is false.

### Final Answer:
- The assertion (A) is true, and the reason (R) is false.

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