This interactive scatter plot visualizes the classic Iris dataset, encoding sepal and petal measurements as point positions and species membership as color. Built with React and D3 v5, it uses dropdown menus to dynamically select which attribute appears on the x- and y-axes. Scales from `d3.scaleLinear` map the data domain to pixel coordinates, while `d3.scaleOrdinal` assigns categorical colors to the three species. SVG circles with hover tooltips display exact values, and custom axis components render ticks and labels using the `format` function.