This stacked bar chart visualizes the monthly income distribution of five individuals, segmented by age and gender. Each bar is divided into two stacked segments representing the binary categories “No Income” and “Below Rs.10000,” with steelblue and darkorange fills. The chart uses `d3.stack()` to compute the stacked series and `d3.scaleBand` for the categorical x-axis, with `d3.axisBottom` and `d3.axisLeft` rendering the axes. The data is static and embedded in the script, rendered as SVG elements.