The IAAF stands for the International Association of Athletics Federations, now officially known as World Athletics.
It is the international governing body for the sport of athletics, which includes track and field, cross country running, road running, racewalking, and more.
The headquarters of the IAAF is located in Monaco, a small, sovereign city-state on the French Riviera in Western Europe.
Monaco serves as the administrative and operational center for World Athletics.
Let’s consider the other options:
- Switzerland is known for hosting many international organizations (e.g., IOC), but not the IAAF.
- South Africa and Germany are important sports nations, but neither hosts the IAAF headquarters.
Hence, the correct and verified location is (D) Monaco.