The correct answer is (a) Amitav Ghosh.
The DSC Prize for South Asian Literature is an annual literary prize awarded to a work of fiction, non-fiction, or poetry written in English by a South Asian author. The prize was founded in 2009 by the Dubai-based DSC Group and is administered by the South Asian Literature Prize Foundation.
The second DSC Prize for South Asian Literature was awarded to Amitav Ghosh for his novel The Glass Palace. The novel is set in India, Burma, and Singapore during the first half of the 20th century. It tells the story of the Ghosh family, who are caught up in the political and social upheavals of the time.
The other options are incorrect.
(b) H.M. Naqvi is a Pakistani-American author. His novel Home Boy won the 2007 DSC Prize for South Asian Literature.
(c) Shashi Tharoor is an Indian diplomat, politician, and writer. He has written several novels, including The Great Indian Novel and Show Business.
(d) Shehan Karunatilaka is a Sri Lankan author. His novel Chinaman won the 2010 DSC Prize for South Asian Literature.