Hydraulic Action is a type of erosion caused by running water. This process occurs when the force of flowing water exerts pressure on the river or stream bank, causing it to loosen and dislodge particles of sediment. As the water moves, it picks up these loose particles and carries them downstream. Hydraulic action is particularly effective in areas with high water velocity and turbulence, such as waterfalls or rapids. The force of the water can create cavities, cracks, and form irregularities in the rock or soil, leading to further erosion. It is important to note that wind erosion, glacier erosion, and none of these options mentioned do not specifically involve hydraulic action.