C!
V= displacement/time
Speed= distance/time
Displacement is the space between two points, usually from the first to last point, but doesn't have to be. (Basically, it's the distance between your starting and ending point). With displacement, direction matters, but with speed, direction doesn't.
Speed, on the other hand, is the entire traveled distance as a whole. Unlike displacement, direction doesn't matter.
I hope this helped!