This bubble chart visualizes the Fast Food Nutrition dataset, plotting sodium against cholesterol for individual menu items while using circle radius to encode calorie count. The visualization is rendered with D3, specifically employing `scaleLinear` for both axes and `scaleOrdinal` with `schemeCategory10` for color encoding by menu item. Data points are drawn as circles with interactivity, displaying a tooltip on hover that reveals item details. The chart adapts to window resizing through an event listener that triggers re-rendering.