Five fruit circles transition between states as apples are eaten and one apple morphs into a lemon. The visualization demonstrates the D3.js general update pattern: entering circles grow from a zero radius, exiting circles shrink away, and existing circles update their color and size. The code uses d3.select, d3.range, and a custom fruitBowl function with d3.scaleOrdinal for color and radius, while SVG transitions animate attribute changes over one second.