The correct answer is A. the rights of tillers against the Zamindars and Britishers.
Yadunandan Sharma was a freedom fighter from Bihar who started the Reora Satyagraha in 1917. The movement was against the oppressive zamindari system and the British government’s policies that were harmful to the interests of the peasants. The movement was successful in achieving some of its demands, such as the reduction of rent and the abolition of begar (forced labor).
Option B is incorrect because the Reora Satyagraha was not related to temple entry. The movement was focused on the rights of the peasants, not on religious issues.
Option C is incorrect because the Reora Satyagraha was not against taxation. The movement was focused on the rights of the peasants, not on taxation issues.
Option D is incorrect because the Reora Satyagraha was related to the rights of the tillers against the Zamindars and Britishers.