A network graph of eight people connected by "Friend with" relationships, with link thickness representing interaction value. The layout uses `d3.forceSimulation` with link, charge, collision, and center forces, rendering nodes as circles and links as red lines with arrow markers. Node positions update on each simulation tick, and dragging is enabled via `d3.drag`. Data comes from a JSON file defining nodes and links, with SVG output generated through D3 v6 selections. Hovering highlights nodes by adding a green stroke.