This example presents an interactive scatter plot of the Iris flower dataset, allowing users to select which numeric attributes to plot on the x- and y-axes via dropdown menus. The visualization uses React for component-based UI and rendering, with D3 v5 utilities such as `scaleLinear`, `extent`, and `format` for scales and axis tick formatting. SVG circles represent data points, colored by species using `scaleOrdinal`, and include tooltips showing exact values. The code leverages a custom `useData` hook to load CSV data asynchronously.