This pie chart visualizes the gender distribution of students in the StudentsPerformance.csv dataset. Each slice displays the gender and its percentage of the total, with an accompanying legend showing exact counts. Built with D3 v7, the code uses `d3.rollup` to aggregate data, `d3.pie` for the layout, and `d3.arc` to generate SVG paths. A Tableau10 color scale and custom label arcs enhance readability.