This interactive scatter plot visualizes the Iris dataset, allowing users to explore relationships between sepal and petal measurements. The chart uses D3’s `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to map data points to SVG circles, with axis labels generated accordingly. Two dropdown menus built with a custom `menu()` function let viewers switch which numeric columns are plotted on the x- and y-axes. Data is loaded asynchronously via D3’s `csv` method, and the visualization fills the browser window.