A yellow smiley face appears on an SVG canvas, built entirely through D3.js DOM manipulation. The face uses circles for eyes, rectangles for eyebrows, and a D3 arc path for the mouth. A chained `transition` animates the eyebrows upward and back over two-second intervals, creating a winking expression. The code imports `select` and `arc` from D3 v5 to construct and update SVG elements dynamically.