An interactive scatterplot of the Iris flower dataset visualizes correlations between sepal and petal measurements, with species distinguished by color. The visualization uses React state management in the main `App` component to control dropdown menus for selecting which measurement attributes appear on the x and y axes. D3 v7 utilities like `scaleLinear`, `scaleOrdinal`, and `extent` compute scales for the SVG rendering, while the data loads via the `csv` parser. The dropdown component allows users to switch between four numeric attributes, updating the axes and tick labels dynamically through React's `useState` hook.