This stacked bar chart demonstrates how movie ratings vary across genres, revealing that documentaries and animations achieve higher proportions of excellent ratings while action films are heavily skewed towards poor ones. The visualization loads CSV data and uses D3.js v7 APIs including `d3.stack`, `d3.csv`, `d3.scaleOrdinal`, `d3.scaleBand`, and `d3.scaleLinear` to render the SVG. Interactive tooltips appear on hover, displaying the precise percentage for each rating category within a genre.