The graph shows distance versus time for an object. Which of the following correctly describes the object's motion? a The object is moving with constant acceleration. b The object is moving with increasing acceleration. c The object is moving with constant velocity. d The object is moving with increasing velocity.

The correct answer is c) The object is moving with constant velocity.

In the graph, if the distance-time graph has a straight line, it indicates that the object is moving with constant velocity.