If a rock is subjected to differential stress, then it means that:

A) forces are pushing inward from all directions by the same amount
B) stresses are pushing inward from all directions by the same amount
C) fluid pressure is greater than the confining pressure
D) the amount of stress is greater in some directions than in others

Differential Stress

Stress applied to a rock body in different directions, leading to deformation like folding, faulting, or flowing.

Confining Pressure

The pressure applied equally in all directions on a rock or sediment layer, often increasing with depth in the Earth's crust.

Fluid Pressure

The pressure exerted by a fluid at equilibrium at any given point within the fluid, due to the force of gravity.