This example shows a React-based dropdown menu for selecting a pet from a list of six options. It combines React’s `useState` hook to manage the selected value and a reusable `Dropdown` component that renders a native HTML `<select>` element. The dropdown’s onChange handler updates the state via `onSelectedValueChange`. The code uses React 16.9 and ReactDOM for rendering, with no D3 or other visualization library involved. The styling sets a large font size for the select control and hides page overflow.