This example uses D3.js v5 to draw a two-layer cake with decorative elements. The visualization shows a bottom and top cake tier, five candles with flames, a knife, three balloons, and ten randomly placed sprinkles. The code builds the scene by appending SVG shapes directly to the document, using `d3.select()` for DOM manipulation and `selectAll().data().enter()` for iterative creation of repetitive elements like candles and sprinkles, with randomized positioning for the latter.