Which one of the following deals with the marketing of milk ?

The correct answer is (b) GCMMF.

GCMMF, or Gujarat Cooperative Milk Marketing Federation, is a cooperative body that markets milk and milk products in India. It is the largest milk cooperative in the world, and its products are sold under the brand name Amul.

CACP, or the Commission for Agricultural Costs and Prices, is a government body that advises the government on agricultural prices. NAFED, or the National Agricultural Cooperative Marketing Federation of India, is a cooperative body that markets agricultural produce. TRIFED, or the Tribal Cooperative Marketing Development Federation of India, is a cooperative body that markets tribal produce.

CACP, NAFED, and TRIFED do not deal with the marketing of milk.