D3.js v5 builds a smiley face from primitive SVG shapes, with rectangles and semicircular arcs animating into place over two seconds via chained `transition().duration()`. The code uses `select`, `line`, and `arc` from the D3 module, drawing a circle for the head and moving blocks for features. An embedded video demonstrates the eyebrow movement, while the SVG canvas (960×500) hosts the static, animated construction.