This interactive scatterplot visualizes the Iris flower dataset, showing relationships between sepal and petal measurements. Users select which attributes to plot on the x- and y-axes via dropdown menus. Points are colored by species (setosa, versicolor, virginica) with a legend, and they animate into position using D3 transitions on `attr('cx')` and `attr('cy')`. The visualization uses d3.csv for data loading, scaleLinear, axisBottom, axisLeft, and scaleOrdinal for scales and axes.