This D3 pie chart visualizes the distribution of diabetes outcomes from a CSV dataset, showing the count of patients with (1) and without (0) diabetes. The chart uses `d3.pie()` and `d3.arc()` to render slices, with labels positioned via `arc.centroid`. A color scale (`d3.scaleOrdinal`) assigns light blue and red fills. A legend, built with HTML `div` elements, displays each category alongside its frequency. The visualization is rendered as SVG and directly labels each slice with its outcome and count.