{"version":"1.0","type":"rich","title":"Activity_6_Task4","description":"A bubble chart maps happiness score against GDP per capita, with circle size encoding life expectancy across 30 countries. Regions are distinguished by color, and hovering reveals detailed country metrics in a tooltip. The visualization is built with D3 v7, using `d3.scaleOrdinal` with `schemeTableau10`, `d3.scaleSqrt` for bubble sizing, and linear scales for both axes. Data comes from a CSV file loaded via `d3.csv`, rendered as SVG elements with animated hover transitions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/64e5501d67e14cbeba50047e2f1211f9?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}