Answer:
The graph in the upper left
Step-by-step explanation:
We can answer this question by elimination.
The answer can't be the two graphs on the right, because the two lines will never cross.
It can't be the graph at the lower left, because this shows both cyclists starting at Mile 0.
It must be the graph in the upper left. It shows one cyclist starting 45 mi ahead of the other, with the faster cyclist catching up after about 2.5 h.
