Which statement best evaluates how non-toxic alternatives to pesticidal control would contribute to biodiversity?

The use of non-chemical sustainable mode of control of pestcides are the best option which does not lead to pollution of environment, and any health hazard. Resistant cultivars may be used, crop rotation, proper agricultural techniques, field sanitation and hygiene maintenance are some of the alternative techniques that may be followed for avoiding the use of harmful chemicals for the control of pests in the farms. Further, beneficial microorgansims like Pseudomonas, Rhizobia may also be used to flee away pests and better productivities and yields, as well as nutritional value. 

Ibelieve the answer is c.