The correct answer is Gujarat Cooperative Milk Marketing Federation (GCMMF).
GCMMF is a cooperative society that markets milk and milk products under the brand name Amul. It is the largest milk cooperative in the world, with over 3.6 million members. GCMMF procures milk from over 1.6 million farmers in Gujarat and processes it into a variety of products, including milk, yogurt, cheese, butter, and ice cream. It also exports its products to over 50 countries.
NDDB is a government-owned organization that was established in 1965 to promote dairy development in India. It provides technical and financial assistance to dairy cooperatives, and also conducts research on dairy products. NDDB does not procure milk from farmers or market milk products.
Mother Dairy is a private company that was founded in 1974. It procures milk from farmers and markets milk products under the brand name Mother Dairy. Mother Dairy is a subsidiary of the National Dairy Development Board (NDDB).
Parag is a private company that was founded in 1987. It procures milk from farmers and markets milk products under the brand name Parag. Parag is not a subsidiary of any government or private organization.