This scatter plot visualizes the Iris Dataset, plotting sepal length on the x-axis against sepal width on the y-axis. The React application loads the CSV data via `d3.csv` and renders the chart as an SVG. It uses D3 v5 scales (`d3.scaleLinear`) and extent to compute axes, with tick marks styled via CSS. Hovering over a circle reveals its sepal length using an SVG `<title>` tooltip.