The correct answer is A. Mavlankar.
H.V. Moolgaokar Mavlankar was the first Speaker of the Lok Sabha, the lower house of the Parliament of India. He was elected on 15 August 1950, the day India became a republic. He served as Speaker until his death in 1956.
Mavlankar was born in 1886 in Surat, Gujarat. He studied law at the University of Bombay and began his career as a lawyer. He entered politics in 1920 and joined the Indian National Congress. He was a member of the Constituent Assembly, which drafted the Constitution of India.
Mavlankar was a strong advocate of parliamentary democracy. He believed that the Speaker should be impartial and should not interfere in the proceedings of the House. He was also a strong advocate of the rights of the minorities.
Mavlankar was a respected figure in Indian politics. He was known for his integrity and his commitment to democracy. He was a key figure in the development of Indian parliamentary democracy.
The other options are incorrect.
B. Hukum Singh was a member of the Indian National Congress and a minister in the Uttar Pradesh government. He was not the first Speaker of the Lok Sabha.
C. B.D. Jatti was a member of the Indian National Congress and the Vice President of India. He was not the first Speaker of the Lok Sabha.
D. V.V. Giri was a member of the Indian National Congress and the President of India. He was not the first Speaker of the Lok Sabha.