This interactive scatter plot displays the Iris dataset, showing how sepal and petal measurements differ across three iris species. Users select which measurements to plot on each axis via dropdown menus, and the chart redraws with semi-transparent colored circles representing each species. The visualization uses D3.js version 5 with SVG rendering, employing d3.scaleLinear for axes, d3.axisBottom and d3.axisLeft for tick marks, and d3.csv to load the data from a local CSV file. A static HTML legend outside the SVG maps species names to red, green, and blue circles.