To solve this question, the user needs to have knowledge about Indian authors and their famous works.
The correct answer is A. Sashi Taroor.
Explanation for each option:
A. Sashi Taroor: He is an Indian author and politician who has authored several books, including "The Great Indian Novel", which is a satirical novel that retells the story of the Indian independence movement through characters from Indian mythology. Therefore, option A is the correct answer.
B. Jawaharlal Nehru: He was the first Prime Minister of independent India and was a prolific writer himself. However, he did not write "The Great Indian Novel".
C. Advani LK: He is an Indian politician and a former Deputy Prime Minister of India. He has not authored "The Great Indian Novel".
D. Amartya Sen: He is an Indian economist and philosopher who has won the Nobel Memorial Prize in Economic Sciences. However, he is not the author of "The Great Indian Novel".
Therefore, the correct answer is A. Sashi Taroor.