Asiad is regulated by___________.

Correct option is D

Asiad, also known as the Asian Games, is regulated by the Olympic Council of Asia (OCA).
 The OCA is responsible for organizing, developing, and promoting sports in Asia, and it governs the Asian Games, which is a multi-sport event held every four years among athletes from Asian countries.
 The International Olympic Council (IOC) oversees the Olympic Games, while the Commonwealth Games Federation (CGF) is responsible for the Commonwealth Games, which is a multi-sport event for athletes from the Commonwealth of Nations. The Indian Olympic Council is responsible for organizing and promoting sports in India.