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 AD1 to AD2 can be caused by
Definitions:
Risk-free Asset
An investment with zero risk of financial loss, theoretically providing guaranteed returns, such as government bonds.
Portfolio Betas
Measures the volatility, or systemic risk, of a portfolio of investments relative to the overall market, indicating its sensitivity to market movements.
Greater Than 1.0
This term typically implies a value that exceeds one in magnitude, often used in financial ratios indicating a positive performance or ratio above one.
Slope of the SML
The gradient of the Security Market Line which reflects the trade-off between risk and return in financial markets.
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