Statement-I : The speed of a body can be negative.
Statement-II : If the body is moving in the opposite direction of positive motion, then its speed is negative.

Options

A. Statement-I is true, Statement-II is true, Statement-II is correct explanation for Statement-I
B. Statement-I is true, Statement-II is true, Statement-II is NOT a correct explanation for Statement-I
C. Statement-I is true, Statement-II is false
D. Statement-I is false, Statement-II is true.

Explanation

To analyze the statements given in the question, we need to understand the concepts of speed and velocity.

### Step-by-Step Solution:

1. **Understanding Speed and Velocity**:
- Speed is defined as the magnitude of velocity. It is a scalar quantity, which means it only has magnitude and no direction.
- Velocity, on the other hand, is a vector quantity; it has both magnitude and direction.

2. **Evaluating Statement-I**:
- Statement-I claims that "The speed of a body can be negative."
- Since speed is a scalar and is defined as the absolute value of velocity, it cannot be negative. Speed is always a non-negative quantity (i.e., speed ≥ 0).
- Therefore, Statement-I is **false**.

3. **Evaluating Statement-II**:
- Statement-II states that "If the body is moving in the opposite direction of positive motion, then its speed is negative."
- This statement is misleading because, as established, speed cannot be negative regardless of the direction of motion. The direction of motion affects velocity, not speed.
- Thus, Statement-II is also **false**.

4. **Conclusion**:
- Both statements are incorrect. Speed cannot be negative, and the direction of motion does not affect the sign of speed.

### Final Answer:
Both Statement-I and Statement-II are **false**.

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