A mapping robot starts at X and moves 24 km North; then 16 km West; then 9 km South; then 4 km East. 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 = -12 km. | Step 3: Combine North and South moves: the net vertical coordinate is y = 15 km. | Step 4: Thus the final point is (-12,15); its x-sign points West and its y-sign points North. | Step 5: Combining those two directions places the point in the North-West quadrant. | Step 6: Therefore the traveller is North-West of the starting point; distance is unnecessary because only direction is asked. | Final Answer: Option C — North-West.