Which of the following is a common example of an MSB?

A money services business (MSB) is defined as a financial institution or business that offers services involving the transfer or exchange of money. This can include various activities such as money orders, traveler's checks, and currency exchange.

Wire transfer services are a common example of an MSB because they facilitate the movement of funds between individuals or institutions, often across different geographic locations. Wire transfers are a way for individuals to send money quickly and securely, making this service integral to the operations of many MSBs that specialize in such activities.

While credit unions and investment banks are important financial institutions, they do not typically fit the definition of an MSB in the context of BSA compliance. Credit unions primarily offer savings and loan services to their members, while investment banks focus on financial advisory services, underwriting, and capital raising for corporations and governments. Savings accounts, on the other hand, are a type of deposit account offered by banks and other financial institutions, rather than a service associated with the transfer or exchange of money. Thus, wire transfer services distinctly represent a core function of MSBs, which is why they are correctly identified as the right answer.