This multidimensional scatter plot maps age and BMI for roughly 250 individuals, encoding insurance charges through circle radius and gender through color. The visualization uses D3 v7 with linear scales for both axes, an ordinal color scale for male/female categories, and square-root scaling to size circles proportionally to charges. Rendered as SVG, the chart includes axes with tick formatting, a legend showing charge minimum and maximum values, and example male/female colored dots, with data loaded asynchronously from a CSV file hosted on GitHub.