If the motion of an object is represented by a straight line parallel to the time axis in a distance-time graph, then the object undergoes

Options

A. an acceleration motion
B. a decelerated motion
C. a uniform non-zero velocity motion
D. a zero velocity motion

Explanation

To solve the question, we need to analyze what it means for the motion of an object to be represented by a straight line parallel to the time axis in a distance-time graph.

### Step-by-Step Solution:

1. **Understanding the Distance-Time Graph**:
- A distance-time graph plots distance (y-axis) against time (x-axis). The slope of the line in this graph represents the velocity of the object.

2. **Identifying the Characteristics of the Line**:
- If the line is straight and parallel to the time axis, it means that as time progresses, the distance remains constant.

3. **Interpreting the Motion**:
- A straight line parallel to the time axis indicates that there is no change in distance over time. This means that the object is not moving.

4. **Conclusion**:
- Therefore, if the motion of an object is represented by a straight line parallel to the time axis in a distance-time graph, the object is at rest.

### Final Answer:
The object undergoes **rest**.