Concept:The map scale is the ratio between a distance on the map and the corresponding distance on the ground. A statement scale expresses this ratio in words.Explanation:The map has a representative fraction of 1:50,000.So, 1 cm on the map represents 50,000 cm on the ground.Convert this ground distance into kilometres: 100,000 cm =1 km, so 50,000 cm =0.5 km.Therefore, 1 cm on the map represents half a kilometre on the ground.Answer:A. one centimeter on the map represents half kilometer on the ground.
