This area chart visualizes the four key attributes of the Iris dataset (sepal length, sepal width, petal length, and petal width) grouped by species. Using d3.v7 with SVG rendering, it overlays four semi-transparent areas with distinct colors (steelblue, orange, green, purple) to compare attribute values across different Iris species. The chart employs d3.scaleBand for the categorical x-axis, d3.scaleLinear for the numeric y-axis, and d3.area to construct the area paths. Data is loaded from an external CSV file via d3.csv, with axis labels and a legend providing context.