This example demonstrates a simple pet-selection interface built with React, featuring a dropdown menu that allows users to choose among several pet options. The main App component maintains the current selection’s state, and the reusable Dropdown component renders a native HTML `<select>` element, mapping over the provided options array to generate `<option>` elements. The code uses React’s `useState` hook for state management and `ReactDOM.render` to mount the app to the DOM, with the dropdown’s change events triggering state updates. The interaction is minimal, focusing on controlled component composition and state handling.