This interactive scatter plot visualizes the classic Iris dataset, displaying the relationship between two user-selected attributes (sepal length, sepal width, petal length, or petal width) for three iris species. Circles represent individual flowers, color-coded by species, with dropdown menus allowing selection of which measurements appear on the x-axis and y-axis. Built with D3 v5, the visualization uses d3.csv, d3.scaleLinear, d3.scaleOrdinal, d3.axisLeft, and d3.axisBottom to render the SVG chart, complete with gridlines, axis labels, and a legend.