This example demonstrates a dropdown menu for selecting a pet, with the chosen value displayed in the browser’s console. The interface is built using React hooks (`useState`) to manage the selected option and a custom `Dropdown` component that renders a native `<select>` element. Styling is applied via CSS, while the page loads React, ReactDOM, and D3 v5 from CDNs, though D3 itself is not used in the visible logic. The rendering is SVG-based, as indicated by commented-out circles in the HTML markup.