A family tree visualization built with D3 v6 renders hierarchical relationships as an orange-node SVG tree on a purple background. The code uses `d3.stratify()` to convert flat parent-child data into a tree structure and `d3.tree()` to compute node positions. Animated paths draw connecting links over one second via `transition()`, while circles and text labels appear with a shorter transition. The final layout positions nodes using the tree’s computed coordinates, with names displayed inside each circle in bold gray text.