This interactive scatter plot visualizes the Iris flower dataset, showing relationships between sepal and petal measurements. Users can select any combination of four measurement attributes for the x- and y-axes via dropdown menus. The data is loaded from a Google Sheet using d3.csv, with three Iris species distinguished by semi-transparent red, green, and blue circles. The visualization uses d3.scaleLinear for axes, d3.axisBottom and d3.axisLeft for ticks, and updates dynamically through d3.select and change event handlers.