Question

Which explains what a velocity /time graph would look like with no acceleration? ​

Answer 1

Answer:

I think it is a displacement

Answer 2

With no acceleration, the "velocity" is constant ... the speed isn't changing and the direction isn't changing.

A so-called "velocity/time" graph is really just a "speed/time" graph, because it doesn't show any information about the direction of motion.  But that's OK.  We know that the speed isn't changing.  So the graph never gets any higher or lower.

The graph is a straight (horizontal) line with no slope. (C)