The correct option is B Expanding agriculture
The Kakatiyas brought large tracts of land under cultivation by
building tanks and digging wells. Apart from members of the royal
family and other feudal families, the rich sections of the society like
merchants and artisans also participated in expanding
agriculture through construction of tanks. This enabled the extension of
cultivation in the difficult terrains of Telangana and Rayalaseema.
Thus, by promoting agriculture they derived income in the form of taxes and agriculture produce.