Final answer:
The FBI is a crime prevention organization that combats financial and other crimes within the U.S. and collaborates internationally to address transnational organized crime.
Step-by-step explanation:
The crime prevention organization that assists law enforcement in the prevention, detection, and prosecution of financial crimes such as theft, fraud, and arson is the Federal Bureau of Investigation (FBI). The FBI operates within U.S. national borders and coordinates with comparable organizations in other states and with international crime-fighting bodies like the United Nations Office on Drug and Crime to tackle transnational organized crime (TOC). Domestic law enforcement agencies, including the FBI, perform vital roles in protecting communities and ensuring the adherence to the law against various crimes at the federal level.