Concept:The question asks about the author of the historical book “Ashtaraj Ambhoj”.Explanation:“Ashtaraj Ambhoj” was written by Dhanulal Shrivastava.The book was published in 1925.It contains historical and geographical details related to regions like Rajnandgaon and Kawardha.Hence, Dhanulal Shrivastava is the correct author among the given options.Answer:C. Dhanulal Shrivastava