Which story could be represented by the graph shown?

a.

miriam walked to her friend’s house, walked home, walked to the store, and walked home again.

b.

miriam bicycled up and down two hills in her neighborhood.

c.

miriam jogged, then did two circuits of running fast and slowing down, and finally jogged to a stop.

d.

miriam swam two laps at the swimming pool at a constant speed before resting.