The correct answer is (a) Justice Pradeep Kumar Mohanti.
Justice Pradeep Kumar Mohanti was appointed as the first Ombudsman of India on 15 December 1985. He was a former judge of the Orissa High Court. He was appointed to the post of Ombudsman by the President of India, on the recommendation of a committee headed by Justice M.N. Venkatachaliah.
Justice Mohanti was born in 1932 in the village of Mohantipada in the Puri district of Orissa. He studied law at the University of Calcutta and was enrolled as an advocate in the Orissa High Court in 1956. He was appointed as a judge of the Orissa High Court in 1978. He retired from the High Court in 1992.
After his retirement from the High Court, Justice Mohanti was appointed as the first Ombudsman of India. He held the post of Ombudsman till 1997. He died in 2012.
The other options are incorrect.
(b) Justice D.B. Bhosle was a former judge of the Supreme Court of India. He was appointed as the Chief Justice of the High Court of Bombay in 1985. He retired from the Supreme Court in 1990.
(c) Justice Pinaki Chandra Ghosh was a former judge of the Calcutta High Court. He was appointed as the Chief Justice of the High Court of Orissa in 1992. He retired from the High Court in 1997.
(d) Justice Ajay Kumar Tripathi was a former judge of the Allahabad High Court. He was appointed as the Chief Justice of the High Court of Jharkhand in 2011. He retired from the High Court in 2014.