Motion of an object is ___________ if its velocity is constant.

Correct option is D

Motion of an object is uniform if its velocity is constant.
· When the velocity of an object remains constant, the motion is said to be uniform. This means that the object is moving at a constant speed in a straight line, without any acceleration.
· The velocity of the object can be in any direction, but as long as it remains constant, the motion is uniform.
· It is important to note that uniform motion does not necessarily mean that the object is not moving. The object can be moving at a constant speed, even if it is not changing its position. For example, if a car is moving on a straight road with a constant speed, then its motion is uniform. However, if the car turns or accelerates, its motion is no longer uniform.