This line chart shows bike sales from 2013 to 2021, with the x-axis representing years and the y-axis representing sales values. The chart uses D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` generators to render an SVG path with red strokes, while CSV data is loaded via `csv()` and parsed with `d3.timeParse`. The visualization includes gridlines via tick sizes and axis labels for “years” and “sales.”