A minimal demonstration of D3 version 7, this example renders the text “Hello D3 version 7” directly into the page body. The code imports the `select` function from the D3 library and uses it to set the body’s text content. Styling applies a 13em font size for prominent display. The example relies on `d3.min.js` from an unpkg CDN and a separate `bundle.js` file, showing a basic setup for integrating D3 into a web page.