which force created a fault - block mountain?\ncompression\nshearing\nsubduction\ntension

Brief Explanations:

Fault - block mountains are formed when tensional forces in the Earth's crust cause large blocks of rock to break and move up or down along faults. Compression forms folded mountains, shearing causes transform - plate boundaries and subduction occurs at convergent - plate boundaries where one plate moves under another. Tension is the force responsible for fault - block mountains.

Answer:

tension