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The force that causes mass movements is:
A. Gravity
Gravity is the force of attraction between all objects with mass. It is responsible for pulling objects towards the center of the Earth. In the context of mass movements, gravity plays a crucial role in causing rocks, soil, and other materials to move downhill in processes such as landslides, rockfalls, and slumps. When the force of gravity overcomes the resistance of the materials holding them in place, mass movements occur.
In contrast, the other options listed (Waves, Chemicals, Wind) do not typically cause mass movements. Waves refer to movements of water in oceans or seas, chemicals relate to substances involved in chemical reactions, and wind pertains to the movement of air. These forces may influence the environment in different ways but are not primarily responsible for mass movements like gravity.
