Correct Answer:
C. Jeddah, Saudi Arabia
The headquarters of the Organization of Islamic Cooperation (OIC) is located in Jeddah, Saudi Arabia. This city serves as the permanent base for the intergovernmental organization that represents the collective voice of the Muslim world.
- Riyadh, Saudi Arabia, is the capital of Saudi Arabia, but not the OIC headquarters.
- Istanbul, Turkey, is a major cultural and economic hub in the Islamic world, but it does not host the OIC headquarters.
- Cairo, Egypt, is another significant city in the Arab and Islamic world and hosts the Arab League headquarters, but not the OIC.