Longshore drift occurs when: the repetitive action of swash and backwash transports sediment sideways along the coas powerful waves wash against the shore, carrying rock and sand away rock particles in waves grind against the shore none of the above

Longshore drift is a geographical process that consists of the transportation of sediments (clay, silt, sand and shingle) along a coast at an angle to the shoreline, which is dependent on prevailing wind direction, swash and backwash. This process occurs in the littoral zone, and in or close to the surf zone.