Praja Mandal Movement took place in Sirmaur in

The correct answer is: C. 1930 AD

The Praja Mandal Movement was a political movement in the princely state of Sirmaur in India. It was launched in 1930 by Thakur Amar Singh, a young Rajput leader, with the aim of achieving responsible government in the state. The movement was supported by a wide range of people, including peasants, workers, and intellectuals. It was successful in achieving its goal of responsible government, and the Praja Mandal was instrumental in the formation of the first popular government in Sirmaur in 1939.

The other options are incorrect because:

• Option A is incorrect because the Praja Mandal Movement was launched in 1930, not 1920.
• Option B is incorrect because the Praja Mandal Movement was launched in 1930, not 1925.
• Option D is incorrect because the Praja Mandal Movement was launched in 1930, not 1939.