This multi-series line chart visualizes three measurements from the Iris dataset—sepal length, sepal width, and petal length—across the dataset’s rows. Each series is rendered as a distinct colored path (red, blue, green) using D3’s `line` generator, with `scaleLinear` mappings for x and y axes. The React component appends an SVG via `d3.select` and loads data asynchronously with `csv`, then adds axis labels and a legend. The chart uses D3 v7 with axes created via `axisBottom` and `axisLeft`.