A yellow smiley face rendered in SVG demonstrates animated eyebrow movement. The face is constructed from D3 primitives: a circle for the head, circles for eyes, rectangles for brows, and a path generated with `d3.arc` for the mouth. The eyebrows animate via chained `transition` calls with two-second durations, moving up and then returning to their original position. The code imports `select` and `arc` from D3 v7 and places elements using SVG transform attributes.