Refer to the information provided in Figure 19.4 below to answer the questions that follow. 
Figure 19.4
-Refer to Figure 19.4. The demand and supply of pounds are S1 and D1. Which of the following can change the equilibrium exchange rate ($/pound) to $2.50 and the equilibrium quantity to 400 pounds?
Definitions:
Interactionist Approach
A theoretical perspective that emphasizes the combined effects of both individual characteristics (such as genetic traits) and environmental factors (such as societal influences) on human behavior.
Self-Efficacy
Refers to an individual's belief in their own ability to complete tasks and reach goals.
Latent Insecurity
A hidden or underlying feeling of uncertainty or anxiety about oneself that may not be immediately apparent.
Personal Interaction
Direct communication or engagement between individuals, often leading to the exchange of ideas or building of relationships.
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