This example shows a React-based dropdown menu for selecting a pet, with the current choice logged to the console. It demonstrates how React state and props manage a controlled `<select>` element through a reusable `Dropdown` component, which maps over an options array. The code uses React’s `useState` and `ReactDOM.render`, with no direct d3 APIs; instead, D3.js is loaded via CDN but remains unused except as a dependency. The styling uses large fonts for the label and select, with smaller font for options.