This interactive scatter plot allows users to explore the classic Iris dataset by selecting which sepal or petal measurement appears on the X and Y axes via dropdown menus. Each of the 150 flowers appears as a semi-transparent circle, colored by species (setosa, versicolor, or virginica) with a legend. The visualization uses d3.csv for data loading, d3.scaleLinear for the axes, d3.scaleOrdinal for colors, and d3.select to rebuild the SVG on each menu change.