A menu-driven interface built with React and D3 lets a user select a car brand from a dropdown list. The example displays a static set of options (Volvo, Saab, Mercedes, Audi) and, upon selection, prints a confirmation message using React's `useState` hook. The `Dropdown` component, a React JSX element, manages the `<select>` HTML control. The page uses the Poppins font and relies on React and D3 libraries loaded via `unpkg` CDNs, with the React app rendered into a `#root` div.