This interactive scatter plot visualizes the classic Iris dataset, allowing users to compare flower measurements through dropdown menus that control the x and y axes. The visualization uses React with D3 v5 scales and SVG rendering, featuring a color legend that distinguishes iris species. Hovering over a legend item highlights matching data points while dimming others. The code employs `d3.scaleLinear`, `scaleOrdinal`, `extent`, and `csv` for data parsing and scaling.