Answer
Scatter Plot
Work Step by Step
The best graph for this data is a scatter plot. In order to create a scatter plot, create an x-y plane, graphing the year number on the x-axis. Starting at year 0, graph each point in the plane, and then draw the best-fit line (which is the line that seems to be the best at being close to all of the points.) Doing this, we see that there is a positive correlation, meaning that the amount of CO2 that the US is giving off is increasing.