To accurately determine which two quantities are described in the given graph, I would need to see the graph or have details about its axes and what they represent. However, based on the options you provided, I can offer some guidance:
- If the x-axis represents time (like years or months) and the y-axis represents rainfall, the correct choice might relate to average rainfall over time.
- If the x-axis represents specific months and y-values represent average rainfall, then the option mentioning "the average rainfall in inches and the month of the year" would be fitting.
If you can provide more context about what the graph depicts, I'd be happy to help you determine the correct answer!