This interactive scatter plot visualizes the classic Iris dataset, displaying measurements of sepal and petal length and width for three Iris species. Users can dynamically select which measurements appear on the x- and y-axes via dropdown menus, with points colored by species and a legend provided. The visualization is built with D3 v5, using `d3.csv` to load the data and `d3.scaleLinear`, `d3.axisBottom`, and `d3.axisLeft` to render scales and axes as SVG elements.