Explanation:

-Dadabhai Naoroji was the first Indian to become member of British Parliament. W.C. Bonnerjea was the first president of the Indian National Congress.
- Lord Satyendra Prasanna Sinha, a leading lawyer of the Calcutta High Court, was the first Indian advocate general of Bengal, the first Indian to become a member of the Viceroy‘s Council, the first Indian to become a member of the British ministry and the first Indian governor of an Indian province (then Bihar and Orissa). Sinha was a political moderate and believed Indians should campaign for political rights through constitutional means alone. 

- Popularly known as Dadasaheb, Ganesh Vasudev Mavalankar, the first Speaker of the Lok Sabha was born on November 27, 1888. Ganesh Vasudev Mavalankar remained Speaker of the Central Legislative Assembly till the midnight of August 14-15, 1947 when, under the Indian Independence Act, 1947, the Central Legislative Assembly and the Council of States ceased to exist and the Constituent Assembly of India assumed full powers for the governance of the country.