Distance-time graph shows a__________  in non uniform motion. 

Pick the correct option to fill in the blank.

Non-uniform motion: It is referred to as the motion of an object in which the object proceeds with varied speed and it does not follow the same distance in equal time intervals, irrespective of the time interval duration.

Example:

• If a car covers 10 meters in the first two seconds and 15 meters in the next two seconds.
• The motion of a train.

A distance-time graph for a non-uniform motion is a curve.