Concept:Joothan is an autobiographical work by Omprakash Valmiki, a key figure in Dalit literature.Explanation:The word "Joothan" means leftover scraps of food, used metaphorically to describe the discrimination faced by Dalits.Omprakash Valmiki wrote the book originally in Hindi.It is a deeply personal memoir of growing up as a Dalit in rural northern India.The book details the extreme social and economic hardships he experienced.This work is significant for exposing the caste system and giving voice to Dalit experiences.Answer:B. Omprakash Valmiki