A yellow smiley face rendered in SVG has animated eyebrows that rise and fall. The face is built through basic DOM manipulation with D3.js, appending circles, rectangles, and an arc-shaped mouth to an SVG group. A chained `transition` with a 2000-millisecond duration moves the eyebrow group up and down. The example demonstrates core D3 v5 selections and transitions for simple, focused visual animations.