The correct answer is: C. Ravindra Kelekar
Ravindra Kelekar (1925-2015) was a Konkani writer, poet, critic, and journalist. He is considered to be one of the most important figures in Konkani literature. He was awarded the Jnanpith Award in 1998, the highest literary award in India, for his contribution to Konkani literature.
Laxmanrao Sardessai (1899-1989) was a Konkani writer, poet, and politician. He is considered to be one of the pioneers of Konkani literature. He was awarded the Padma Shri in 1972, the fourth highest civilian award in India, for his contribution to Konkani literature.
Abhay Sardesai (1930-2012) was a Konkani writer, poet, and critic. He is considered to be one of the most important figures in modern Konkani literature. He was awarded the Sahitya Akademi Award in 1992, the highest literary award in India, for his contribution to Konkani literature.
Manohar Sardesai (1934-2017) was a Konkani writer, poet, and critic. He is considered to be one of the most important figures in modern Konkani literature. He was awarded the Sahitya Akademi Award in 1992, the highest literary award in India, for his contribution to Konkani literature.
The other options are incorrect because they are not the first winner of the Jnanpith Award for Konkani language.