Correct Answer: (a) Pir Mohammad Munis
Solution:Pir Mohammad Munshi wrote books like ‘Champaran ki Durdasha’, ‘Bai Dukhi Hriday’, and Pratap’, under the pseudonym ‘Dukhi’ (sad) ‘Dukhi Atma (sad soul) and ‘Dukhi Hriday’ (sad heart) and threw light on the miserable condition of Champaran's farmers. His other works are ‘Champaran Mein Atyachar’ ‘Pratap’ Champaran Mein Mahatma Gandhi and Hindu-Muslim Ekta, etc.