This network graph visualizes social connections among nine people, with node colors and link weights indicating group membership and relationship strength. The interactive visualization uses D3.js v4’s force-directed layout API (`d3.layout.force()`) to position nodes, applying gravity, distance, and charge parameters. Node and link data come from a local `graph.json` file, rendered as SVG elements. Users can click and drag nodes using `force.drag`, with positions updated on each tick of the simulation.