This pie chart displays the distribution of student test groups among individuals with a math score greater than 70, using data from a CSV file loaded via `d3.csv`. It visualizes group proportions as colored slices, with labels showing group names and counts, plus a legend. The chart is built with D3 v6, using `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` for colors, and renders interactive SVG elements within a fixed-width container.