Major geologic events such as earthquakes, volcanic eruptions, and mountain building result from lithospheric plate motions. Landforms and sea-floor features are the result of a combination of constructive (crustal deformation, volcanic eruptions, deposition of sediment) and destructive (weathering, erosion) processes. The primary cause of continental drift, earthquakes, and volcanic eruptions is A. convection currents beneath Earth's crust.
B. the rotation of Earth on its axis.
C. the gradual sinking of the earth's crust D. heat form the Sun warming Earth​