This fork of Rahul's area chart visualizes the average petal length for each flower species. It loads a CSV dataset via `d3.csv`, aggregates the data using `d3.rollup` to compute means by species, and renders a smooth area chart with `d3.area` and `curveMonotoneX`. The visualization includes labeled axes, a chart title, and scales defined with `scaleBand` and `scaleLinear`, all drawn as SVG elements using the D3 v7 library.