A yellow smiley face with black-outlined eyes and a wide open mouth is rendered in D3.js. The animation moves the face’s rectangular eyebrows upward and back down in a looping transition. The code uses D3’s `select`, `arc`, and `transition` APIs to construct the SVG shapes and animate the eyebrow group’s transform attribute over two sequential two-second durations. The visualization demonstrates fundamental DOM manipulation by building each facial feature from primitive SVG elements.