Question

A force that causes mass movement is called

Answer 1

D or C is the only two I can think of. So I’d narrow it down

Answer 2

B- Gravity

Gravity is the main force responsible for mass movements. Gravity is a force that acts everywhere on the Earth's surface, pulling everything in a direction toward the center of the Earth. On a flat surface, parallel to the Earth's surface, the force of gravity acts downward.