Answer: 2.5%
Step-by-step explanation:
Treasury bonds have no default risk as they are backed by the U.S. government. The premiums that make up the yield are the inflation, liquidity and maturity risk premiums.
Required yield on Treasury bond = Inflation premium + Liquidity premium + Maturity risk premium
4.5% = 2% + 0% + Maturity risk premium
MRP = 4.5% - 2% - 0%
= 2.5%