Which of the following refers to the Specially Designated Global Terrorists?

The term that refers to Specially Designated Global Terrorists is indeed represented by the acronym SDGT. This designation is part of a framework established by the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) and is used to identify individuals and entities that are associated with terrorism and engage in actions that pose a threat to the national security of the United States or its allies.

The acronym SDGT serves as a specific classification that allows government agencies to impose sanctions against these individuals or organizations, restricting their access to the U.S. financial system and preventing U.S. citizens and businesses from engaging in transactions with them. Proper understanding of this designation is critical for those working in fields related to immigration and national security, as it helps in identifying and mitigating risks associated with terrorism.

The other options do not correspond to the correct terminology and thus are not applicable in this context.