A pie chart visualizes sales distribution across five product categories, with each slice labeled and sized proportionally to its sales value. The chart uses D3.js v7 with SVG rendering, employing `d3.pie` to compute arc angles and `d3.arc` to generate the paths. A color ordinal scale assigns distinct hues to categories, while an accompanying legend lists each category with its exact sales figure. The data is loaded from a local array, matching the sample dataset, and the visualization centers the pie within a 600x500 SVG canvas.