D3_
This example renders a single SVG arc using React and D3. The page displays a heading and a small 100x100 pixel SVG containing a path generated by `d3.arc()` with fixed inner and outer radii, plus start and end angles. The arc is drawn via the `d3.arc()` function’s output, which is assigned to the `d` attribute of an SVG path element. The code uses React 17 and D3 v7, with the visualization embedded directly in a JSX component and rendered through `ReactDOM.render`. The data is hardcoded in the arc parameters.