The correct option is C wastes generated by one process is used as raw material for another process
Integrated organic farming is a zero waste process as the wastes generated from one process can serve as raw material for the other. This proves to be extremely economical and results in maximum utilisation of resources and increased efficiency in production.
This sustainable and economical venture is being followed by Ramesh Chandra Dagar, a farmer in the Sonipat district of Haryana. He includes bee-keeping, dairy management, water harvesting, composting and agriculture in a cyclic chain such that one process supports the other.