The motion of a particle in straight line is an example of

Options

A. constant velocity motion
B. uniformly acceleration motion
C. non-uniformly acceleration motion
D. zero velocity motion

Explanation

To solve the question regarding the motion of a particle in a straight line, we need to analyze the options provided and understand the definitions of different types of motion.

### Step-by-Step Solution:

1. **Understanding the Motion**: The question asks about the type of motion exhibited by a particle moving in a straight line. In physics, motion can be classified based on how the velocity of the particle changes over time.

2. **Analyzing the Options**:
- **Constant Velocity Motion**: This occurs when a particle moves in a straight line at a constant speed. The velocity does not change over time.
- **Uniformly Accelerated Motion**: This is when a particle's velocity changes at a constant rate. The particle covers equal distances in equal intervals of time.
- **Non-Uniformly Accelerated Motion**: This occurs when the acceleration of the particle changes over time, meaning the velocity does not change uniformly.
- **Zero Velocity Motion**: This refers to a situation where the particle is at rest, meaning it does not move at all.

3. **Identifying the Correct Option**:
- Since the question specifies "the motion of a particle in a straight line," we need to determine if the motion is uniform or non-uniform.
- A straight line can represent both constant velocity motion (if the speed is constant) and uniformly accelerated motion (if the speed is changing uniformly).
- However, the question seems to imply that we are considering the general case of motion in a straight line, which often refers to uniformly accelerated motion, as it is a common scenario in physics.

4. **Conclusion**: Based on the analysis, the correct answer is **uniformly accelerated motion**, which corresponds to option B.

### Final Answer:
The motion of a particle in a straight line is an example of **uniformly accelerated motion** (Option B).

---