The technology of biogas production from cow dung was developed in India largely due to the efforts of
1. Gas Authority of India
2. Oil and Natural Gas Commission
3. Indian Agricultural Research Institute, Khadi and Village Industries Commission
4. Indian Oil Corporation
(c) Cattle dung is used for the production of biogas, commonly called gobar gas.
The technology of biogas production from cowdung was developed in India mainly due
to the efforts of Indian Agricultural Research Institute (ARI) and Khadi and Village
Industries Commission (KVIC). Other options (a), (b) and (d) did not play any role is this.