The correct answer is C. 1947.
The International Civil Aviation Organization (ICAO) is an agency of the United Nations responsible for the safety of international civil aviation. It was established on 4 April 1947, following the Convention on International Civil Aviation that was signed in Chicago on 7 December 1944. The ICAO’s headquarters is located in Montreal, Canada.
The ICAO’s mission is to develop the principles and techniques of international air navigation and to foster the planning and development of international air transport so as to ensure safe, regular, efficient and economical air services, consistent with the needs of the peoples of the world.
The ICAO’s work is carried out through a number of committees and working groups, which meet regularly to discuss and develop new standards and recommended practices. The ICAO also publishes a number of documents, including the Convention on International Civil Aviation, the Chicago Convention, and the ICAO Technical Manual.
The ICAO is an important organization in the field of international civil aviation. It plays a key role in ensuring the safety and efficiency of international air travel.
Option A is incorrect because the ICAO was not set up in 1929. The ICAO was established on 4 April 1947.
Option B is incorrect because the ICAO was not set up in 1939. The ICAO was established on 4 April 1947.
Option D is incorrect because the ICAO was not set up in 1950. The ICAO was established on 4 April 1947.