This scatter plot visualizes the relationship between Total Fat and Protein content for a curated selection of McDonald’s menu items, with circle size encoding the Carbohydrate level. The chart uses D3.js (v7) to build linear scales and axes, drawing circles for each food item. A reusable scatter plot module, configured with accessor functions for the x, y, and z values, renders the data from a CSV file loaded via D3’s `csv` function. The visualization highlights nutritional comparisons among popular items, using axis labels and gridlines to clarify the quantitative values.