This example displays a multi-series line chart tracking student performance across 200 weeks, plotting study hours, sleep hours, and exam scores on a single y-axis. The D3 v7 code loads data from a CSV file and uses `d3.line` with `curveMonotoneX` to generate smooth paths for each metric, with circles marking individual data points. Axes and gridlines are rendered via `d3.axisLeft` and `d3.axisBottom`, while a legend distinguishes the three colored series. The visualization employs an SVG-based rendering approach with a white background and styled grid lines.