Which is not a type of mass movement

Mass movement is things such as Creep; Fall, Slip, Flow; Solifluction; Rock Glaciers; Slumping; Mudflow; Debris Flow, Debris Slide, Debris Avalanche; Rockslide; Rockfall; Debris Fall. An example of something not a type of mass movement is run

Dumb kids playing chess on freeways go spat domain

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this