An interactive scatter plot visualizes the Iris dataset, showing sepal and petal measurements for three iris species. Users select which features appear on the x- and y-axes via dropdown menus, and the plot updates with a staggered 500-millisecond circle transition. Built with D3 v5, the SVG render uses `d3.scaleLinear` for axes, `d3.extent` for domains, and `d3.axisBottom`/`d3.axisLeft` with gridlines. Circles are color-coded by species, and the axes and title update dynamically based on the selected attributes.