{"version":"1.0","type":"rich","title":"Activity 7 Q2","description":"This area chart shows the number of car listings per year in a USA cars dataset, revealing trends in vehicle availability over time. The visualization uses a monotone curve to connect yearly counts, with a steelblue fill beneath the line. The code imports `csv`, `scaleLinear`, `area`, `curveMonotoneX`, and `group` from D3 v6 to load the data, aggregate counts by year, and render the chart as an SVG. Axes and labels are created via `axisBottom` and `axisLeft`, with the dataset sourced from a raw GitHub URL.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f5befcca309b4226be44bb941a88ec48?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}