{"version":"1.0","type":"rich","title":"task_9&10 question_2","description":"This example shows the average horsepower, torque, and highway MPG for 31 car brands as a stacked area chart rendered as SVG. The data is aggregated by brand and drawn using D3 v5’s `d3.stack()`, `d3.area()`, and `d3.scaleBand()` on a categorical x-axis. Each layer is filled with a `d3.schemeCategory10` color, and the y-axis is scaled linearly. The chart is built with standard D3 selections and the `join()` pattern for the path elements.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a60d6e9c805e4eb985e5480878902681?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}