The correct options are
A Efficient irrigation systems
B Farm equipments
C Pesticides, fertilizers and insecticides
A good yield of crops is dependent on so many factors, some of which are:
1) efficient and appropriate irrigation systems.
2) farm equipments like harvester, thresher to reduce human labour.
3) pesticides, insectides and fertilizers to help control the growth of pests and insects, and increase soil fertility.