Answer:
A. high confining pressure increases friction on the fault
Explanation: A Fault is a line or zone between two rocks, which are caused by certain earth Movement.
A fault is a also known as fractures or cracks seen on the earth crust, within this faults there are some kinds of compressional movement s and tensions taking place.
WHEN THE CONFINING PRESSURE IS HIGH,THE FRICTION ON THE FAULT INCREASES.