A stick-figure face, composed of a yellow circle with a blue stroke, two circular eyes, and rectangular eyebrows, sits centered on an SVG canvas. The face’s mouth is drawn with the D3 `arc` geometry generator, which creates a pie-shaped path. A `transition().duration(2000)` chain alternately shifts the eyebrow group up and down, producing a looping animation. The example builds its scene using D3's imperative `select` and `append` API, positioning elements via `attr('transform', …)` rather than a data-driven or force-based layout.