The correct options are
A Farmers use chemical fertilizers intensively.
B The companies provide financial support to cultivate certain crops.
C The companies buy the seeds at pre-determined prices.
The contractors provide farmers with financial support to cultivate certain crops. To achieve high yield, they use fertilizers extensively. The crop is bought at pre-determined prices if the yield is of good quality. In this form of farming, the farmers have to bear the risk of poor harvest.