{"version":"1.0","type":"rich","title":"Activity6_Question4","description":"This interactive D3.js bubble chart visualizes fertility rate against life expectancy for ten countries, with bubble size representing population and color distinguishing geographic regions. The visualization uses an SVG-based rendering with d3.scaleLinear for axes and bubble sizing, and d3.scaleOrdinal with interpolated turbo colors for regional categorization. Hovering over any circle triggers a tooltip displaying the region name, implemented through mouse event handlers. The chart includes a size legend and a color-coded category legend. Data is loaded from a CSV file, and the visualization demonstrates animated transitions for tooltip opacity changes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/17d12d6130eb4a18a84a06e6140d09b0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}