A simple yellow smiley face is drawn with SVG shapes, featuring circular eyes, rectangular eyebrows, and a mouth created using the `arc` generator. The eyebrows animate upward and back down via chained `transition` calls over two-second durations. The code builds the face with D3 v5 selections, using `select`, `attr`, and `append` to position elements relative to a centered group, with coordinates calculated from the SVG’s width and height.