Which of the following events could cause a rightward shift in the demand curve for a normal good?

• A. A decrease in the population size
• B. An increase in consumer income
• C. A decrease in the price of the good
• D. A decrease in the price of a substitute good

Answer: (B)

Verified step by step guidance

1. Understand that a rightward shift in the demand curve means an increase in demand at every price level.
2. Recall that for a normal good, demand increases when consumer income increases, causing the demand curve to shift rightward.
3. Analyze each option: a decrease in population size would reduce demand, shifting the curve leftward, so it cannot cause a rightward shift.
4. A decrease in the price of the good itself causes movement along the demand curve, not a shift of the curve.
5. A decrease in the price of a substitute good would typically decrease demand for the normal good, shifting its demand curve leftward.