Which office manages services for U.S. citizens abroad?

The Overseas Citizen Services is the correct answer because it is specifically responsible for providing assistance and services to U.S. citizens living or traveling abroad. This office addresses a variety of needs, including providing information on safety, travel advisories, and consular services, as well as helping citizens in dire situations, such as those involving emergencies or legal issues. This focus on the welfare of U.S. citizens outside of the country underscores the role of this office.

The other options, while related to consular services, do not hold the specific mandate of managing services exclusively for U.S. citizens abroad. The Office of Field Operations primarily deals with border security and immigration services, the Office for International Cooperation focuses on global partnerships and international relations rather than direct citizen services, and the Office of Consular Services supports a range of consular functions generally rather than being exclusively dedicated to U.S. citizens overseas.