This interactive scatter plot visualizes the Iris dataset, allowing users to explore relationships between sepal and petal measurements across species. Two dropdown menus, built with a custom D3 menu component using `d3.dispatch`, control which quantitative or categorical attributes map to the x and y axes. The chart uses `d3.scaleLinear` and `d3.scalePoint` for scaling, with SVG circles animated via `d3.transition` and `selection.join` for smooth updates.