The national public radio broadcaster, 'All India Radio', was set up in which year?

Answer: Option 4

Explanation:

History of Indian Radio is the history of radio broadcast that started in India with the setting up of a private radio service in Madras (now Chennai), in the year 1924. In that same year, British government gave license to the Indian Broadcasting Company, a privately owned company, to launch Radio stations in Bombay (now Mumbai) and Calcutta (now Kolkata). The first ever news bulletin in the country went on the air from the Bombay Station on July 23, 1927. A month later on August 26, 1927 another bulletin in Bengali was started from the Calcutta Station. Until 1935, two bulletins, one each in English and Hindustani were broadcast from Bombay and a bulletin in Bengali was broadcast from Calcutta. The Indian Broadcasting Company went into liquidation in March, 1930 following which broadcasting came under the direct control of the Government of India. The service was designated as the Indian State Broadcasting Service. It was renamed All India Radio on June 8, 1936.