This scatter plot visualizes the classic iris dataset, mapping sepal length on the x-axis and sepal width on the y-axis. Each circle represents an individual flower, with a fixed radius and semi-transparency to reveal overlapping points. The visualization is built with D3 v6, using `d3.csv` to load the data, `d3.scaleLinear` and `d3.extent` for scaling, and `d3.axisBottom` for the x-axis. The SVG rendering is responsive to the window size, with margins applied to the plot area.