This interactive scatter plot, built with D3.js, visualizes the classic Iris flower dataset, allowing users to dynamically select which numerical columns to plot on the X and Y axes via dropdown menus. Each point is colored red with transparency. The visualization uses D3's `scaleLinear` for axis scaling, `axisLeft` and `axisBottom` for the y and x axes, and the custom `dropdownMenu` component uses a native HTML `<select>` element. Animated circle transitions are achieved through the `transition().duration()` method.