An interactive scatter plot visualizes the Fisher Iris dataset, allowing users to select which sepal and petal measurements appear on the x- and y-axes via dropdown menus. Three iris species are distinguished by colored circles (red, green, blue), with a legend and animated transitions when axes change. The visualization is built with D3 v7, using `scaleLinear` for scales, `axisLeft` and `axisBottom` for axes, and `transition().duration()` for smooth circle movement.