A stacked bar chart displays monthly fruit sales for apples, bananas, and carrots, with each bar normalized to represent 100% of total quantity. The chart uses horizontal bars where segment widths show each fruit's proportional contribution, and hovering reveals precise quantities via a tooltip. The visualization is built with D3.js (v7), using `d3.csv` to load data, `d3.stack` for series stacking, `d3.scaleLinear` and `d3.scaleBand` for axes, and SVG rendering. Data comes from the fruitsales.csv file.