This scatter plot shows the relationship between sugar and sodium levels for menu items from six major fast-food chains, with circle size encoding calorie content and color distinguishing restaurants. The visualization uses D3’s scaleLinear and scaleOrdinal functions to map data to positions and categorical colors, while a custom responsive-axes library handles dynamic resizing. Interactive tooltips appear on mouseover, revealing item details from the Kaggle fast-food nutrition dataset. The chart filters out entries with missing values and displays a title above the plot.