This interactive scatter plot visualizes the Iris dataset, plotting measurements like sepal and petal length against each other. Users select which features to compare via two dropdown menus, which triggers animated transitions as the circles move to their new positions. The visualization uses d3.csv to load data, d3.scaleLinear and d3.axisBottom/axisLeft to construct axes, and d3.transition for the 1-second animations, rendering points as SVG circles color-coded by iris species.