ANSWER
Step-by-step explanation
Distance is the total distance traveled, which is the sum of the distances Cameron flew in each direction:
On the other hand, displacement is the direct distance between the starting point and the ending point. Note that Cameron flew 13km west, but in the end he flew back 13km east, so the distance separating the starting and ending points is the distance he flew south:
And for the diagram, we'll take left as west direction, down as south and right as east.