A fruit bowl visualization demonstrates the D3 update pattern with nested elements, showing apples and lemons as circles in a bowl that changes over timed intervals. The code uses d3.scaleOrdinal for colors and radius mapping, with d3-selection’s enter, merge, and exit methods to handle dynamic data updates. An SVG renders the bowl as a rounded rectangle, while each fruit is a group containing a circle and text label. The example includes a deliberate data mutation where an apple becomes a lemon, illustrating how the update pattern reuses existing DOM nodes efficiently.