Five circles represent fruit in an SVG bowl, using d3.scaleOrdinal for color and radius mapping. Hovering over a circle highlights it with a black stroke via mouseover and mouseout events. Circles animate in and out with a one-second d3 transition, while the dataset changes over time by removing fruit and mutating one apple into a lemon. Rendering uses d3 v5 with the enter, merge, and exit pattern for data joins.