A social network graph displays nine named individuals connected by weighted links, with node size fixed and link thickness proportional to edge weight. Using the D3 v4 force layout, the visualization loads data from a JSON file containing nodes grouped by affiliation and links with numeric weights. SVG elements render the graph, with green circles and black text labels for each person. The force simulation applies gravity, distance constraints, and charge to position nodes, while user interaction enables dragging. The code employs `d3.layout.force`, `.start()`, and tick handlers to update line and node positions dynamically.