Concept:A contour line connects points of equal elevation. The highest contour is the line with the greatest value shown on the map.Explanation:Look at the map and identify all the contour values marked on it.The greatest labelled contour is 730m.The options 800m, 750m, and 700m are not marked as the highest contour on the map.Therefore, the highest contour line present is at 730m.Answer:C. 730m