Answer:
The graphs are attached
We know that the train traveled for 1.5 hours first, then stopped for 30 minutes, after that, it traveled for another 4 hours.
So, we have to look for a graph that has an increasing line, then an horizontal line, and then another increasing line. The first increasing period must be from [tex]x=0[/tex] to [tex]x=1.5hr[/tex], then it has to show a horizontal line from [tex]x=1.5hr[/tex] to [tex]x=2hr[/tex]. After that period, it has to show another increasing line from [tex]x=2hr[/tex] to [tex]x=6hr[/tex]
Among the options, the second graph of the first image attached shows this characteristics.
Therefore, the answer is the second graph in the first image attached.
