A bar chart displays fixed-width rectangles for the values 1, 3, and 4, plotted against a linear scale whose domain is computed with `d3.max` and whose range is 0–300 pixels. The bars are drawn as SVG `rect` elements with a constant fill of red, positioned horizontally at 120-pixel intervals from the left edge. The chart is generated using D3 v5 within a minimal HTML page, with the Y-axis rendered via `d3.axisLeft` and appended as a `g` element. The underlying data is hard-coded as a JavaScript array and object literal.