Final answer:
An increase in inflation rate can affect households' decisions to save or spend money.
Step-by-step explanation:
This question pertains to macroeconomics, a subfield of economics that examines the behavior and performance of an economy as a whole. An increase in inflation rate is a macroeconomic factor that can affect households' decisions to save or spend money. When inflation increases, the value of money decreases over time, leading to a decrease in purchasing power. As a result, households may choose to save more money to maintain their standard of living.