This interactive scatter plot displays the Iris dataset, allowing users to explore relationships between sepal and petal measurements as well as species categories. Two dropdown menus, built with a reusable D3 `menu` module, let viewers change which quantitative or categorical attribute appears on the x-axis and y-axis. The chart uses D3 v6 with SVG rendering, implementing a reusable `scatterPlot` function that dynamically rescales axes using `scaleLinear` or `scalePoint` depending on data type, and animates circle positions and radii via `transition` and `selection.join`. Data loads from a GitHub-hosted CSV file.