A yellow smiley face with animated eyebrows is rendered in SVG using D3.js v5. The code uses `d3.select` and `d3.append` to build circles for the eyes, rectangles for the eyebrows, and a path generated with `d3.arc` for the mouth. Eyebrow movement is achieved through chained `transition().duration()` calls that shift the group’s transform. The example demonstrates fundamental DOM manipulation and transition sequencing with D3.