A mapping robot starts at X and moves 34 km South; then 26 km East; then 19 km North; then 10 km West. Locate its final position relative to X.

Step 1: Place the start at O(0,0); positive x means East and positive y means North. | Step 2: Combine East and West moves: the net horizontal coordinate is x = 16 km. | Step 3: Combine North and South moves: the net vertical coordinate is y = -15 km. | Step 4: Thus the final point is (16,-15); its x-sign points East and its y-sign points South. | Step 5: Combining those two directions places the point in the South-East quadrant. | Step 6: Therefore the traveller is South-East of the starting point; distance is unnecessary because only direction is asked. | Final Answer: Option D — South-East.