This interactive bar chart visualizes wine quality scores across two wine types, with a dropdown menu to switch between red and white wines and another to select which chemical attribute (such as alcohol, pH, or sulphates) is plotted as the bar height. The bars are sorted by quality and animate smoothly when the selections change. The visualization uses D3 v5 with SVG rendering, including `d3.scaleBand`, `d3.scaleLinear`, `d3.axisBottom`, `d3.axisLeft`, and transitions on the bar rectangles. Data comes from the embedded CSV file containing wine physicochemical properties.