A smiley face composed of SVG circles and a path mouth is drawn with D3.js, then the circle and mouth transition colors and rotate while the left eyebrow rotates. The example demonstrates fundamental DOM manipulation and animation using d3-selection, d3-arc, and transition methods, with hardcoded coordinates rather than external data. Eyebrow animation is partly commented out, so only the left eyebrow moves via a chained rotate and translate transition.