Figure: Demand Shift 
Refer to the figure. Which factor would cause the change in the figure?
Definitions:
Income Classes
Categories of individuals or households distinguished by levels of income, such as low, middle, and high income.
Marginal Utility
The surplus satisfaction or benefit gained by consuming another unit of a good or service.
Total Utility
The overall satisfaction or value that a consumer derives from consuming a particular quantity of goods and services.
Income Redistribution
Economic policies or mechanisms aimed at leveling the distribution of wealth or income in a society by transferring money from the richer sections to the poorer ones.
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