This social network graph visualizes the connections between ten individuals, with node size and link thickness representing group membership and relationship weight. Using `d3.layout.force()` for physics-based layout and `force.drag()` for interactivity, nodes are rendered as SVG circles with red text labels. The network loads JSON data from `network.json`, drawing links as blue lines whose stroke-width reflects each connection’s weight. The graph uses D3.js v4 and v2 APIs to position elements dynamically, enabling users to drag and rearrange nodes while the force simulation updates positions in real time.