A bare minimum HTML page renders a single SVG circle with a fixed radius of 200 pixels. The example demonstrates how D3 v3 can embed raw SVG elements directly in an HTML document without any JavaScript or data binding. The circle is defined statically in the markup, using standard SVG syntax within the `<svg>` tag. No D3 APIs are invoked, and the page relies solely on native browser rendering of SVG. The source code and accompanying video illustrate the simplest possible visualization setup, focusing on the structural relationship between HTML and SVG elements.