This example demonstrates loading the classic Iris dataset from a CSV file and displaying it as formatted JSON text on a web page. The React app uses the `useEffect` hook to fetch data with D3’s `csv` function, then passes it to a separate visualization module. That module uses `selection.selectAll`, `join`, and `text` to render the parsed data into a `<pre>` element, with `.style` adjusting the font size. The dataset, originally published at the UCI Machine Learning Repository, contains measurements of sepal and petal dimensions across three iris species.