Answer:
C. A rise in saving does not change aggregate demand.
Step-by-step explanation:
Say's law states that the production of goods creates its own demand.
According to Say's law, in a money economy, a rise in saving does not change aggregate demand because total expenditure amount does not change, it only moves from consumption category to the investment category in equal proportion.
Also, disposable income stays constant and consumption decreases, while savings increases.
Savings = disposable income - consumption.