Correct option is C
The first speaker of the Indian Parliament was GV Mavalankar, also known as Ganesh Vasudev Mavalankar.
· Ganesh Vasudev Mavalankar served as the Speaker of the Constituent Assembly of India from 1947 to 1952.
· Dr. B.R.Ambedkar was the chairman of the drafting committee of the Indian Constitution. On 29 August 1947, the Constituent Assembly set up a Drafting Committee under the Chairmanship of Dr. B.R. Ambedkar to prepare a Draft Constitution for India.
· Kanaiyalal Maneklal Munshi was the first Chairman of the Order of Business Committee of the Constituent Assembly.
· Rajendra Prasad served as the first President of India, holding the office from January 26, 1950, until May 13, 1962.