The correct answer is A, Credit risk. Credit risk, also known as default risk, is the risk that the issuer of a bond will fail to make timely interest payments or repay principal. This risk is a key distinguishing factor between U.S. municipal bonds and U.S. government bonds.
Step-by-step, U.S. government bonds (such as Treasury securities) are considered to have virtually no credit risk because they are backed by the full faith and credit of the U.S. government. As a result, they are often referred to as “risk-free” with respect to default.
In contrast, municipal bonds are issued by state and local governments, and their ability to repay debt depends on the financial health of the issuing municipality. Therefore, municipal bonds carry varying degrees of credit risk, which is why they are often rated by credit rating agencies.
Choice B, currency risk, is incorrect because both investments are denominated in U.S. dollars. Choice C, inflationary risk, affects all fixed-income securities since inflation erodes purchasing power. Choice D, interest rate risk, also affects both types of bonds equally, as bond prices move inversely to interest rate changes.
Thus, the unique risk when comparing municipal bonds to U.S. government bonds is credit risk, making Answer A correct.
