A sunburst chart displays the hierarchical structure of the Flare dataset, with each ring segment representing a category and its subcategories, sized by numeric value. The visualization uses D3 v5’s `d3.partition` and `d3.arc` to compute and draw the radial layout, with SVG paths filled by a rainbow scale applied to top-level branches. Labels are rotated and placed conditionally based on arc size, and each segment includes a hover tooltip showing the full ancestor path and value.