Refer to the diagram,which shows three demand curves for coffee.Which of the following would cause the change in the demand for coffee illustrated by the shift from D₁ to D₂?

Question

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An increase in consumer incomes would result in a shift of the demand curve for coffee to the right, as consumers would be more willing and able to purchase coffee at all price levels. This is illustrated by the shift from D₁ to D₂. The other options (A, C, and D) would not directly affect the demand for coffee and would not result in a shift of the demand curve.

Refer to the Diagram,which Shows Three Demand Curves for Coffee