This example shows a pet-selection dropdown built with React. Users choose a dog, goldfish, or spider from a menu, and the selection state updates via React’s `useState` hook. The interface uses a plain `<select>` element, with options mapped from an array of objects containing `value` and `label` properties. The code relies on `ReactDOM.render` to mount the `App` component, and the dropdown’s change events are handled through an `onChange` callback that calls `setSelectedValue`. No data visualization or external charting library is present; it demonstrates basic React component composition and state management.