Final answer:
A change in producers' expectations about the future can affect equilibrium in the market by causing a shift in supply.
Step-by-step explanation:
A change in producers' expectations about the future can affect equilibrium in the market. It can lead to a shift in supply, which will cause a change in the quantity supplied at each price level. For example, if producers expect higher demand in the future, they may increase their production now, leading to an increase in supply.