The correct answer is: C. SlidingIn the study of types of stress in Earth science or physics, stress refers to the force applied to a material that may cause it to deform or break. Main Types of StressCompression – forces that push materials together (like when rocks are squeezed).Tension – forces that pull materials apart.Shear – forces that cause materials to slide past each other in opposite directions.“Sliding” is not a technical type of stress; rather, it is a result of shear stress or a type of movement, not a stress category itself. Therefore, it is not classified as a type of stress in geologic terms.