Correct answer: G. V. Mavalankar.
Ganesh Vasudev Mavalankar became the first Speaker of the Lok Sabha after independent India held its first general elections in 1951 to 1952.
He had earlier served as the Speaker of the Central Legislative Assembly before independence, so he brought a lot of experience to the role. He is often called the father of the Lok Sabha for shaping many of its early procedures.