A stylized cartoon face is drawn with D3.js v5, using SVG shapes to create a cheerful circular head with eyes, irises, cheeks, a nose, and a mouth. The visualization demonstrates basic SVG element construction and attribute manipulation, including circles, lines, and arc-generated paths. The code employs D3's `select` and `arc` APIs to position elements relative to the viewport dimensions and compute the mouth's curved path geometry. Simple coordinate offsets control facial feature placement, while the background is colored via inline SVG styling.