A vector quantity is :

Options

A. work
B. pressure
C. distance
D. velocity

Explanation

To determine which of the given options is a vector quantity, we need to understand the definition of vector quantities in physics. A vector quantity is characterized by having both magnitude and direction.

### Step-by-Step Solution:

1. **Understanding Vector Quantities**:
- A vector quantity is defined as a physical quantity that has both magnitude (size) and direction.
- Examples of vector quantities include displacement, velocity, acceleration, and force.

2. **Analyzing the Options**:
- **Option 1: Work** - Work is a scalar quantity because it only has magnitude and no direction.
- **Option 2: Pressure** - Pressure is also a scalar quantity as it describes the force applied per unit area without a specific direction.
- **Option 3: Distance** - Distance is a scalar quantity, as it only measures how much ground an object has covered regardless of its starting or ending point.
- **Option 4: Velocity** - Velocity is a vector quantity because it has both magnitude (speed) and direction (the direction of motion).

3. **Conclusion**:
- Among the options provided, only velocity meets the criteria of a vector quantity.
- Therefore, the correct answer is **Option 4: Velocity**.

### Final Answer:
The vector quantity is **Velocity**.