Which of the following is not true about mass movement?
a. some mass movement is too slow to be seen.

b. mass movement always leads to landslides.

c. gravity is the driving force behind all mass movements.

d. mass movement is always downslope

B. Mass movement always leads to landslides.

Mass movement or mass wasting is a process in which rocks, stones, debris or sediments are forced downward the hill or slope with respect to the action of gravity. Mass movement does not always leads to landslides as it depends upon the density of moving material going down the slope. The heavier and denser the material, the more profound will be the affect resulting in landslide but lighter material cannot cause landslide.