Educational Broadcasting:The Public Broadcasting Service in the United States has increased the amount of educational and generally more thought-provoking material available on the air, and in Latin America some countries use broadcasts not only to support the work of teachers in schools but also to combat illiteracy and to impart advice to isolated rural populations in matters of public health, agricultural methods, and other social and practical subjects. Great Britain began foreign-language broadcasting early in 1938 with a program in Arabic and transmissions in Spanish and Portuguese directed to Latin America. By the early 1980s Japan was transmitting for 263 hours, while Canada and Australia also sponsored external broadcasts. The Canadian Broadcasting Corporation is required to provide educational programs in both English and French and does so on its AM and FM radio networks, as well as on television. In Australia there is a small educational output on the commercial stations, both radio and television, but by far the greater part of educational broadcasting is undertaken by the Australian Broadcasting Corporation. In a later period similar use of broadcasting is made in most of the tropical countries of Africa and Asia. Therefore, option 1 is the correct answer.