Answer: A. first hour to second
Step-by-step explanation: All u had to do was find the distance change between each point. the first one was done in 1 hour which makes it so u have to multiply it by 2 to make it match all the other points. that by comparing each point to see which had the biggest distance change u will find that the biggest was from the first to the second if u multiply it by 2 like i told u to.
