Concept:Altitude on a map is determined by contour lines and spot heights; the settlement nearest to the highest value is at the highest altitude.Explanation:From the map, Doba is located closest to the highest contour line or spot height.Duba lies on lower ground, Sasi is on still lower ground, and Oki occupies the lowest position among the four settlements.When comparing their positions on the map, Doba is clearly placed on or beside the highest contour value.Therefore, Doba is the settlement with the highest altitude.Answer:Doba
