Final answer:
Nazim has invested in indexed bonds, which are designed to protect against inflation by guaranteeing a rate of return that exceeds the inflation rate, thus maintaining the purchasing power of his investment.
Step-by-step explanation:
Nazim has invested in bonds that are tied to the consumer price index (CPI) to protect his investment against inflation. Specifically, he has bought indexed bonds, a type of bond that promises to pay a real rate of interest that is above the rate of inflation.
Introduced by the U.S. government in 1996, these bonds are attractive to investors looking for a safe investment and protection against inflation, such as retirees planning for the long term. Indexed bonds can indeed reduce concern over inflation because they guarantee a rate of return that maintains the purchasing power of the investor's money regardless of the level of inflation.