Refer to the information provided in Figure 27.1 below to answer the question(s) that follow. 
Figure 27.1
-Refer to Figure 27.1. An aggregate demand shift from AD2 to AD1 can be caused by
Definitions:
Preparedness
The evolutionary predisposition to learn certain types of behaviors or concepts more easily than others.
Conceptualization
The process of defining clear, detailed concepts and categories based on observed phenomena or derived from theories.
Insight Learning
Learning that occurs suddenly through understanding the relationships between various parts of a problem.
Trial And Error
A problem-solving method that involves attempting different solutions and eliminating those that fail to solve the problem until the correct one is found.
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