The Figure Given Below Shows the Consumption Functions of an Economy

Multiple Choice

The figure given below shows the consumption functions of an economy.
Figure 9.4

-Refer to Figure 9.4. Which of the following could explain a downward shift of the consumption function from C1 to C3?

A) An increase in household wealth
B) A decrease in the proportion of young people in the population
C) An increase in the size of the population
D) A decrease in consumer confidence
E) An autonomous decrease in saving