A stacked bar chart visualizes the distribution of five rating categories across six movie genres, with each bar segment showing the percentage of ratings within that genre. Hovering over a segment displays a tooltip with the exact percentage value. The chart uses d3.stack() to aggregate data from a CSV file, d3.scaleBand() for the categorical genre axis, and d3.scaleLinear() for the percentage scale. Colors are assigned via d3.scaleOrdinal(), and SVG rendering displays the horizontal bars with axis labels.