Underground radio filled which gap in the Quit India Movement?

Correct answer: Lack of communication and message circulation

The direct answer is A: underground radio helped overcome the lack of communication and message circulation. During the Quit India Movement, the British arrested many leaders and imposed censorship. Ordinary newspapers and public channels could not freely report instructions, events, or calls for resistance. Underground radio secretly transmitted news and messages, helping activists and the public remain connected. Usha Mehta is strongly associated with this underground broadcast effort. Option A is correct because it names the communication gap. Option B is wrong because indigo cultivation was unrelated to the radio's purpose. Option C is wrong because naval food was not the problem being solved. Option D is wrong because gurdwara management had no connection with the function of the broadcast. The accurate chain is censorship, loss of open communication, secret broadcasting, and circulation of messages. Exam cue: Quit India underground radio means communication under censorship.