This line chart shows the historical closing price of APU stock across 2019 and 2020, with a line path emphasizing price fluctuations over time. The visualization uses D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` with a `curveBasis` to render an SVG path. Data is loaded from a CSV file containing date, value, and volume columns. The chart includes labeled axes for date and value, with a title and grid lines generated by the axis functions.