This example visualizes the distribution of survey respondents across different age groups as an interactive pie chart, with each slice labeled with its corresponding value and accompanied by a color-coded legend. The chart uses D3.js v5 within a React framework, employing the `pie()` and `arc()` functions to compute the arc paths and the `scaleOrdinal()` for color mapping. Data is fetched asynchronously from a CSV file using `d3.csv`, and the SVG rendering includes custom text placement via `arcGenerator.centroid()` for labels.