Final answer:
When prices decrease, the quantity supplied generally b. decreases as well.
Step-by-step explanation:
When prices decrease, the quantity supplied generally decreases as well. This is because suppliers are less willing to produce and sell their goods or services at lower prices.
For example, let's say the price of apples decreases. Apple farmers may decide to supply fewer apples to the market because they can't make as much profit. As a result, the quantity supplied of apples would decrease.
Therefore, the correct answer to the question is decreases.