The correct option is B Increase in irrigation facilities
In Gujarat, the main reason for the development of
agriculture is the increase in irrigation facilities.
Generally, irrigation means supplying water to the
fields through the manmade sources like wells,
under-ground water, small and big dams etc. This
process is called irrigation. There are other projects for irrigation like the Narmada project where water is
conserved in dams. Water is supplied to farms through canals.