This example demonstrates loading a CSV dataset by fetching the Iris Dataset from a remote URL and displaying its raw JSON structure in the browser. The code uses d3.json to retrieve the data, then chains a promise to append a `<pre>` element to the body, formatting the response with JSON.stringify and indentation. The visualization itself is minimal, focusing solely on the data-loading workflow rather than rendering charts or graphs. It relies on D3 v5’s `json` method and standard DOM selection via `select`, making the asynchronous data-fetching pattern explicit.