Which of the following best describes what causes movement along a supply curve?

• A. A change in technology
• B. A change in the number of sellers
• C. A change in the price of the good itself
• D. A change in the cost of production

Answer: (C)

Verified step by step guidance

1. Understand that a supply curve shows the relationship between the price of a good and the quantity supplied, holding other factors constant.
2. Recognize that a movement along the supply curve occurs when there is a change in the price of the good itself, leading to a change in quantity supplied.
3. Identify that changes in technology, number of sellers, or cost of production shift the entire supply curve rather than causing movement along it.
4. Recall that a shift in the supply curve means at every price, the quantity supplied changes, while movement along the curve means quantity supplied changes due to price changes only.
5. Conclude that the correct cause of movement along the supply curve is a change in the price of the good itself.