startsThe situation best represents the relationship between x and y presented in the graph is the last situation which states that "A plant starts at 4 inches tall and grows 1 inch per week.
Here if we take 1 inch as 1 unit of the y axis of the graph and 1 week as the 1 unit of the x-axis. Then the graph of this situation will look like the given graph.
In the graph it is start from 4 unit of the y-axis and in every increase of 1 unit of x-axis leads to 1 unit increase of y-axis. Which is exactly the same situation as the growing of the plant.