This scatter plot explores the relationship between sweetness and ripeness scores in a subset of the Apple Quality dataset, coloring each point green or red based on whether the apple is rated good or bad. The visualization uses d3.scaleLinear for both axes and d3.selectAll to render the circles, with a custom legend object passed into the viz function to display colored squares and labels for each quality category in the lower-left corner. The example demonstrates a reusable viz function that accepts configurable options for margins, axis labels, and legend data.