This example shows a pet-selection menu built with React, where choosing an option from the dropdown updates a displayed value. The interface consists of a label and a dropdown list populated with pet names. The code uses React’s `useState` to manage the currently selected value and a custom `Dropdown` component that renders an HTML `<select>` element. D3.js is imported but only for its `arc` function, which is unused in the visible logic. The dropdown options are defined in a JavaScript array and rendered dynamically.