A yellow circle with black outline and two black eyes forms a simple face using D3.js v5. The mouth is drawn as an arc path using the `d3.arc` generator, positioned within a centered `<g>` group. The SVG canvas is 960 by 480 pixels, with elements placed via absolute coordinates and the group's transform. The code selects the `svg` element and appends circles and a path, demonstrating basic SVG shape creation and coordinate positioning in D3.