Which of the following serve as models for international agricultural research centers?

Explanation

I refers to the International Center for the Improvement of Maize and Wheat (CIMMYT), which is a prime example of an international agricultural research center. II is the International Rice Research Institute (IRRI), also an agricultural center. III is the Synthetic Rubber Research Institute (SRRI), and IV is the Center for International Agricultural Production Control (CIAPC), neither of which are prototypes of international agricultural research centers. Therefore, only I fits the criteria.