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The correct answer is Option (4) → Khadi and Village Industries Commission

Option (4) Khadi and Village Industries Commission — Correct. KVIC stands for Khadi and Village Industries Commission. Along with the Indian Agricultural Research Institute (IARI), it developed the technology of biogas production in India.

NCERT Extract:
Microbes in Production of Biogas – “… Cattle dung is available in large quantities in rural areas where cattle are used for a variety of purposes. So biogas plants are more often built in rural areas. The biogas thus produced is used for cooking and lighting. The picture of a biogas plant is shown in Figure 8.8. The technology of biogas production was developed in India mainly due to the efforts of Indian Agricultural Research Institute (IARI) and Khadi and Village Industries Commission (KVIC).”