This example demonstrates the simplest possible D3 v7 setup by rendering a static text message—“Hello D3 version 7”—directly into the page body. It uses D3’s `select` function to target the body element and the `.text()` method to insert the string. The code loads the full D3 library via a CDN and runs the script from a separate `bundle.js` file, all within a plain HTML page using minimal styling. No data or interactive features are involved, solely illustrating a basic D3 initialization workflow.