The correct answer is A. Rajendra Prasad.
Rajendra Prasad was a prominent Indian lawyer, statesman, and independence activist who served as the first President of India from 1950 to 1962. He was one of the leading figures in the Indian independence movement and was a close associate of Mahatma Gandhi.
In 1920, Prasad was elected president of the Bihar Provincial Congress Committee. In this role, he played a key role in organizing the Non-cooperation Movement in Bihar. The movement was a major turning point in the Indian independence struggle and helped to galvanize support for the cause of independence.
The other options are incorrect. Mazhar-ul-Haque was a Muslim leader from Bihar who was opposed to the Non-cooperation Movement. Shah Mohammad was a Congress leader from Bihar who was also opposed to the Non-cooperation Movement. None of the above is a correct answer.