This line chart displays mobile price trends over time, using month as the x-axis and cost as the y-axis. The visualization loads monthly crop data from a CSV file and renders it as a single black stroke path. The chart uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` to construct the axes and line geometry. Both axes include gridlines and labels, with the y-axis rotated vertically, all rendered as SVG elements within a 950x420 viewport.