This interactive scatter plot visualizes the Iris dataset, allowing users to explore relationships between sepal and petal measurements via dropdown menus that control the x and y axes. Built with React, D3 v5’s `scaleLinear` and `extent` manage the axes, while custom SVG `circle` elements render the data points. The `react-dropdown` library provides the menus, and CSV data is fetched and parsed asynchronously via `d3.csv`. Axis labels and tick marks are generated with D3’s scale API, and hover tooltips display values using a custom formatter.