This example demonstrates D3’s selection API for programmatically creating and managing DOM elements. It renders four paragraphs, each displaying a number from 1 to 4, by selecting the body element and then using `selectAll('p')` with data binding and the `.enter()` method to append new elements. The visualization relies on D3 v7’s `select` and `selectAll` functions, and the code logs both the parent and child selections to the console. The HTML page is styled with large font sizes but contains no graphical chart or data-driven graphics beyond the text output.