A force-directed graph visualizes a social data network, mapping connections between a root node and nested groups of related entities. Larger nodes represent primary hubs, while smaller leaf nodes cluster at the edges. The visualization uses D3 v6's `forceSimulation`, `forceLink`, and `forceManyBody` to position nodes, with SVG circles and text labels rendered for each element. The `drag` and `zoom` handlers let users pan and reposition nodes. Node colors indicate checked (green) versus unchecked (red) states, and the data mimics a network hierarchy.