This interactive scatter plot displays the Iris dataset, plotted with D3 scales and rendered as SVG circles via React components. Two dropdown menus, built with React state, let users select which of the four flower measurements (sepal length/width, petal length/width) to map to the x- and y-axes, with axis labels updating accordingly. The visualization uses `d3.csv` for data loading, `d3.scaleLinear` for axes, and custom React components for axes and marks, with native SVG `<title>` elements for hover tooltips.