This visualization displays the distribution of hypertension risk as a two-category pie chart. It distinguishes between individuals with no hypertension risk (labeled 0, shown in orange) and those with hypertension risk (labeled 1, shown in green), with counts displayed directly on the slices. The chart fetches its data from a CSV file hosted on GitHub using `d3.csv`. The code builds the pie with `d3.pie` and `d3.arc`, applies a categorical color scale via `d3.scaleOrdinal`, and includes a legend rendered next to the chart using HTML.