A D3 scatter plot displays the Iris Dataset, plotting petal length on the x-axis against sepal length on the y-axis. Built with d3.v6, it uses `d3.csv` to load the data, `d3.scaleLinear` for both axes, and `d3.extent` to compute the domains. Circles are rendered via SVG elements in the HTML body. The chart includes `d3.axisLeft` and `d3.axisBottom` for tick labels.