Five apples rendered as red circles sit in a row, with one highlighted by a black stroke when selected. Clicking any circle updates the selected fruit, which is tracked via React’s `useState` hook. The visualization uses React and D3’s `scaleOrdinal` to map fruit types to colors and radii, with SVG circles for rendering. D3 v5 and React 16.8 are loaded from CDNs, and styled by a simple CSS reset.