A React-based menu demonstrates state management and component reuse. The example presents a dropdown selector with two pet options, Goldfish and Dog, and updates a displayed label based on the user’s selection. The `Dropdown.js` component uses React’s `useState` hook and an `onChange` event handler to manage the selected value. The app is built with React and ReactDOM, rendered into an HTML page that loads the libraries from unpkg. The data structure is a simple array of `{value, label}` objects, and the chosen value is logged to the console.