Final answer:
The Office of Inspector General (OIG) is responsible for the surveillance of TRICARE fraud and abuse activities. The Program Integrity Office also plays a role in investigating and reviewing fraud, waste, and abuse cases in TRICARE programs.
Step-by-step explanation:
The correct answer is 2) Office of Inspector General (OIG).
The Office of Inspector General (OIG) is responsible for the surveillance of TRICARE fraud and abuse activities. The OIG is an independent and objective organization within the Department of Defense that investigates and audits TRICARE programs to prevent and detect fraud, waste, and abuse.
The Surveillance and Utilization Review System (SURS) is a part of the Program Integrity Office, which is responsible for investigating and reviewing fraud, waste, and abuse cases in TRICARE programs. The Program Integrity Office, indicated in option 3), works closely with the Office of Inspector General to ensure the integrity of TRICARE programs.