Which of the following changes would NOT shift the demand curve for a good or service?

• A. A change in the price of a substitute good
• B. A change in the price of the good itself
• C. A change in consumer income
• D. A change in consumer tastes and preferences

Answer: (B)

Verified step by step guidance

1. Understand the difference between a movement along the demand curve and a shift of the demand curve. A movement along the demand curve occurs when the price of the good itself changes, while a shift happens due to other factors.
2. Recall that the demand curve shifts when there is a change in non-price determinants of demand, such as consumer income, tastes and preferences, or the price of substitute or complementary goods.
3. Analyze each option: a change in the price of a substitute good affects demand because consumers may switch between goods, causing the demand curve to shift.
4. A change in consumer income affects demand because it changes consumers' purchasing power, leading to a shift in the demand curve.
5. A change in consumer tastes and preferences affects demand by making the good more or less desirable, which also shifts the demand curve. However, a change in the price of the good itself causes movement along the demand curve, not a shift.