I don't know what to do but I think it is #1
Answer:
60 MPH
Step-by-step explanation:
18. It would be the second graph. The third graph is eliminated as the boy takes a time period to shave, which means there should be a constant point (horizontal line) right after the first incline. The first one is eliminated as the boy takes a bath which requires another constant point in the graph.
19.
C
E
D
A
B

This cannot be simplified any further.
Have a good one!