A yellow smiley face is drawn in the center of an SVG canvas using D3 v7. The face includes a circular head, two black eyes, and an arc-based mouth created with the `d3.arc` generator. Two rectangular eyebrows are added, and the right eyebrow animates by repeatedly transitioning its vertical position via `transition.attr` over two-second durations, causing a winking effect while the rest of the face remains static.