The visualization displays two interactive pie charts comparing apple and orange counts across five regions, with a toggleable radio interface to switch datasets. Built with D3.js (v5.16.0), it renders an animated SVG donut chart using `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` color scales. Legends appear as colored dots and labels beside the chart. On dataset change, arcs transition smoothly via `transition.attrTween` with interpolation, and a delayed auto-animation replays the arc tweens every two seconds. Data is loaded asynchronously from `data.json` via `d3.json`.