A major peasant uprising took place in Bihar in 1938-39 in the districts of:

Gaya and Shahabad
Bhojpur and Saran
Patna and Muzaffarpur
Bhagalpur and Munger

The correct answer is: Bhojpur and Saran.

The Kisan Sabha (Peasants’ Association) was formed in 1936 by Swami Sahajanand Saraswati, a leading figure in the Indian independence movement. The Kisan Sabha organized peasants in Bihar to demand better wages, lower rents, and an end to oppressive practices such as bonded labor.

In 1938-39, the Kisan Sabha led a major peasant uprising in the districts of Bhojpur and Saran. The uprising was sparked by a series of incidents in which landlords and their agents used violence to suppress peasant protests. The uprising spread rapidly, and by the end of 1938, it had involved hundreds of thousands of peasants.

The uprising was eventually suppressed by the British government, but it had a significant impact on the Indian independence movement. It showed that the peasantry was a powerful force that could be mobilized for political action, and it helped to unite the peasantry and the working class against British rule.

The other options are incorrect because they do not refer to the districts where the peasant uprising took place.