This interactive scatter plot explores the classic Iris flower dataset by allowing users to select which measurements to compare on the x and y axes via dropdown menus. The visualization uses D3.js v5 with SVG and animated transitions to render the data points. As users change the axis selections, the plot re-renders with a smooth delay effect, with each circle animating from the center. The code specifically uses `d3.scaleLinear`, `d3.extent`, `d3.axisBottom`, and `d3.axisLeft` to build the scales and axes.