This chart visualizes the cost of sales from 2000 to 2013 using a simple line graph. The data, loaded from a CSV file via `d3.csv`, contains yearly cost values that are plotted against a linear Y-axis and a categorical X-axis. The visualization uses D3 version 6.7.0 to render an SVG line path with light green strokes, while red axis labels titled “Year” and “cost” are added using the `d3.select` and `d3.append` methods. The chart’s styling includes a red, underlined heading and a fixed width of 960 pixels.