This example draws a simple smiling face using D3.js, with a yellow circular head, white elliptical eyes with dark pupils, and a wide arc-shaped mouth. The face is rendered as SVG elements within a 960×500 viewport, with the head centered and the mouth positioned using D3’s `arc` generator to create a path. The code explicitly selects the SVG canvas and appends shapes using D3’s selection API, setting attributes like fill, stroke, and geometry directly.