A : If speed of a particle is never zero than it may have zero averag speed.
R : The average speed of a moving object in a closed path is zero.

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 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 statement, then mark (4).

Answer

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

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states: "If the speed of a particle is never zero, then it may have zero average speed."
- Speed is defined as the distance traveled divided by the time taken. If speed is never zero, it implies that the particle is always moving.
- Average speed is calculated as total distance traveled divided by total time taken. Since the particle is always moving, the total distance cannot be zero, which means the average speed cannot be zero. Therefore, the assertion is **false**.

2. **Understanding the Reason**:
- The reason states: "The average speed of a moving object in a closed path is zero."
- Average speed is defined as total distance traveled divided by total time taken. In a closed path, the object returns to its starting point, but this does not imply that the total distance traveled is zero. In fact, the total distance is the length of the path taken, which is positive. Hence, the average speed cannot be zero. Therefore, the reason is also **false**.

3. **Conclusion**:
- Since both the assertion and the reason are false, we conclude that the correct answer is option 4: "If both assertion and reason are false, then mark 4."

### Final Answer:
The correct option is **4** (both assertion and reason are false).

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