A scatter plot of the Iris dataset explores relationships between four flower measurements, with dropdown menus that independently select which measurement appears on the x- and y-axes. Built with React and D3 v5, the visualization uses `scaleLinear` for axes and renders points as SVG circles. The dataset loads via `d3.csv` from a GitHub gist, and the menus are implemented with the `react-dropdown` library, updating state through React hooks.