Which of the following is considered an official organ of US government public diplomacy efforts?

The International Visitors Program is an official organ of U.S. government public diplomacy efforts because it is specifically designed to facilitate cultural and educational exchanges. This program invites foreign leaders and professionals to the United States to meet with their American counterparts, providing a platform for dialogue and fostering mutual understanding. By immersing participants in American society, culture, and governance, the program aims to promote a better understanding of U.S. values and policies, ultimately strengthening international relations.

In contrast, while other entities like the National Endowment for Democracy, Business for Diplomatic Action, and Public Affairs Office may support diplomatic activities or contribute to public diplomacy in various capacities, they do not have the same formal status or structured purpose specifically aimed at engaging with foreign leaders and professionals in the same manner as the International Visitors Program.