A scatterplot of Swedish municipalities shows the relationship between municipal tax rate and average income, with circle size encoding mean age. Each point represents a municipality, colored in semi-transparent steel blue over a white stroke. The visualization uses d3.scaleLinear for x, y, and radius scales, d3.axisBottom and d3.axisLeft for gridlines, and SVG circles rendered from data parsed from a local CSV file. A dropdown menu, powered by a custom dropdownMenu function, is present but currently offers only placeholder options.