plate tectonics explains which phenomena?\na mudslides\nb tides\nc mountains\nd tornadoes

Brief Explanations:

Plate tectonics theory describes the movement of Earth's lithospheric plates. Mountains are formed at convergent plate boundaries where plates collide and push up the crust. Mudslides are more related to factors like slope - stability and heavy rainfall. Tides are caused by the gravitational pull of the moon and sun. Tornadoes are atmospheric phenomena.

Answer:

C. mountains