Who is the author of the book 'A gift to the monotheists'?

 a) Moraji Desai
 b) Raja Ram Mohan Roy
 c) Indira Gandhi
 d) Mahalanobis

KPSC HSST-2016

Raja Ram Mohan Roy. RajaRam Mohan Roy published Tuhfat-ul-Muwahhidin (A Gift to Monotheists) in 1805.