Let's Make A Face With D3.js
A single blank SVG canvas is populated with a solitary gray circle. The example demonstrates the basic D3.js workflow of selecting an SVG element, appending a new shape, and setting its attributes. The code uses D3's `select` and `append` methods on the SVG root, then applies `attr` to define the circle's radius. The rendering is done in SVG, with the HTML file linking to the d3.v5 library and a separate `bundle.js` file containing the JavaScript logic. The resulting visualization is minimal, showing only the result of these initial D3 operations.