Based on the times that Ray filled the water jug and the times it was drained, the best graph to show the water level is Graph 4.
What does Graph 4 show?
In the 4th graph, the water level increases at the beginning to a stable level. It doesn't change till halfway through the graph which is most likely when the team took a water break.
The water level then rises to a similar level which shows Ray refilling the water jug. At the end of the practice, Ray empties the jug which is why the water level then goes the zero.
Find out more on graphical representation at https://brainly.com/question/12076235.
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