This D3 v5 zoomable sunburst visualizes the hierarchical structure of the Flare dataset, displaying classic ring segments that expand and contract with click interactions. Built with the `d3.partition` layout and rendered as SVG, the visualization uses `d3.scaleOrdinal` with interpolated rainbow colors to differentiate top-level categories. Animated transitions are handled through `d3.transition` and `transition.attrTween`, interpolating arc geometries and label transformations in 750-millisecond sequences. The example demonstrates the modern D3 API style, including the `join` method for efficient path and text element creation from hierarchical data.