Concept:Rabobank publishes a global ranking of the largest dairy companies by turnover.Explanation:The 2021 Rabobank Global Dairy Top 20 list included Gujarat Cooperative Milk Marketing Federation (GCMMF).GCMMF markets its products under the brand name Amul.It was the first Indian dairy company to enter this global top 20 list.Hence, among the given cooperative federations, GCMMF is the correct answer.Answer:Option C – Gujarat Cooperative Milk Marketing Federation (Amul).