What causes faulting?
a)Tectonic movements
b) Erosion
c) Weathering
d) Volcanic

It is caused due to tectonic movements of the plates of earth's crust. In faulting cracks and faults are created along  the earth’s surface.The fault causes one block of the Earth to rift away from the other or causes the Earth’s block to move up or down.Here convergence forms a mountain.