Final answer:
OFAC's function is tied to national security, as it enforces economic and trade sanctions to support U.S. foreign policy goals, such as national defense and human rights.
Step-by-step explanation:
The function of the Office of Foreign Assets Control (OFAC) is most accurately described as B) National security. OFAC is a financial intelligence and enforcement agency of the U.S. Treasury Department that administers and enforces economic and trade sanctions based on U.S. foreign policy and national security goals. The goals of U.S. foreign policy, which OFAC helps to enforce through sanctions, include keeping the country safe, securing access to foreign markets, and protecting human rights. Therefore, these sanctions are a tool for advancing national defense, by signaling displeasure with the behavior of other countries, and ensuring that international threats, including economic threats, do not harm U.S. interests.