When there is an expectation of lower income in the future, what is the effect on the demand curve of a normal good?

A downward shift in the demand curve would suggest that consumers are willing to purchase less of the good at every price point, which is not the case here. The correct interpretation of the situation involves a leftward shift, not a downward shift, as consumers expect to buy less due to lower future income.

A rightward shift in the demand curve indicates an increase in demand, which occurs when consumers expect higher income or an increase in preferences for the good. However, since the question specifies an expectation of lower income, this choice does not reflect the expected decrease in demand for normal goods.

An upward shift in the demand curve implies that consumers are willing to pay more for the same quantity of goods, which contradicts the scenario presented. Lower income expectations would not lead to an increased willingness to pay; rather, it would result in decreased demand, causing a leftward shift.