Correct Answer: (d) Choukidari
Solution:During the Salt Satyagraha/Civil Disobedience Movement in Bihar, in addition to making salt, the people chose to oppose the government by opposing Chowkidari tax. This tax was collected from the farmers for the compensation of village watchmen (Chowkidar) who was a kind of police. In 1930 farmers refused to pay this tax.