Concept:The straight-line distance "as the crow flies" is measured directly on the map and converted using the map scale.Explanation:Locate Mami and Esho on the map.Measure the straight line between the centres of both settlements.Compare this measured length with the given map scale.The scale shows that this straight-line distance equals approximately 3.0km on the ground.Answer:3.0kmTherefore, option C is correct.
