Concept:Glaciation creates distinctive erosional and depositional landforms in cold regions.Explanation:A cirque is a bowl-shaped hollow carved out by glacial erosion at the head of a valley.Ox-bow lakes are formed by river meanders.Sand-dunes are formed by wind action in deserts.Horizon is a soil layer, not a landform.Therefore, the landform produced by glaciation is a cirque.Answer:C. a cirque