This pie chart visualizes the distribution of student marks, displaying each student's name and their corresponding percentage share of the total. The visualization fetches its data from a CSV file hosted on GitHub and renders the chart as an SVG using D3 v5. The code employs `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` to generate the pie segments and color them, with labels and a legend showing the percentage values and names. The chart is built using the `select` and `append` API to construct the SVG elements.