This interactive scatter plot visualizes the classic Iris dataset, showing measurements of sepal length, sepal width, petal length, and petal width for three species of iris flowers. Users can dynamically select which measurement appears on the x-axis and y-axis using dropdown menus, with each species color-coded via a categorical ordinal scale. Built with D3 v5, the visualization uses `scaleLinear` for the axes, `axisBottom` and `axisLeft` for tick marks, and SVG circles for data points. The plot includes labeled axes and a title, with data loaded from a CSV file using `d3.csv`.