Question

which of the following could cause the supply of carrots to decrease?
a. consumers incomes decrease.
b. there is a technological advance in carrot production.
c. the number of farmers growing carrots increases.
d. fertilizer costs increase.

Explanation:

• Option a affects demand (consumer income influences quantity demanded, not supply).
• Option b increases supply: better tech lowers production costs, allowing more output.
• Option c increases supply: more producers mean more total output.
• Option d decreases supply: higher input (fertilizer) costs raise production expenses, reducing how much producers are willing/able to supply at each price.

Answer:

d. Fertilizer costs increase.