This D3.js v7 visualization presents a pie chart of passenger survival outcomes from the Titanic disaster, sourced from a CSV file hosted on a GitHub Gist. The animation highlights each slice on hover using a scale transform. The code employs `d3.pie`, `d3.arc`, and `d3.rollup` to aggregate survivor counts, with an SVG renderer and a color scale distinguishing survivors (green) from non-survivors (red). The chart also includes labeled slices, a legend, and axis titles for survival status and passenger counts.