Final answer:
Karst topography refers to distinctively pitted and weathered landscapes formed on limestone, which is a type of sedimentary rock.
Step-by-step explanation:
Karst topography refers to distinctively pitted and weathered landscapes formed on limestone, which is a type of sedimentary rock. Limestone is a naturally occurring rock that is composed of marine skeleton fragments from coral reefs and grains of silica, chert, clay, sand, and silt. When limestone comes into contact with water, it erodes quickly, and over time, this erosion leads to the formation of karst features such as caves, sinkholes, and underground drainage systems.