Three nodes labeled Alice, Bob, and Carol are drawn as circles connected by black lines, forming a small network that is laid out by simulated physical forces. Using `d3.forceSimulation` with `forceManyBody`, `forceLink`, and `forceCenter` from D3 v7, the simulation continuously updates each node’s position during a `tick` event, repositioning the SVG circles and lines to equilibrium. The embedded data is a fixed set of three nodes and two links provided in the code.