A simple family tree rendered as an SVG visualization shows three generations of nodes, with circles colored by depth and labeled with names. Using D3 v7, the code builds a hierarchy from embedded JavaScript data and applies a tree layout to position nodes. It draws the edges with `d3.linkHorizontal` and `d3.tree`, while D3's data join pattern appends circles and text labels, with colors assigned via `d3.scaleOrdinal`.