I think a line graph would be best for showing Flores del Mundo’s membership trends over the course of the year, since line graphs effectively display changes over time. If I was graphing total membership versus employee/spouse/dependent, I would use a bar graph instead of a line graph, because this is a part-to-whole relationship, which measures individual categorical subdivisions as ratios to the whole. I would use a line graph to show Eastern and Northern membership trends over the course of a year on the same graph, because the same time series is being used, and I am specifically still interested in seeing the membership trend for each region and trends are most effectively displayed in line graphs.