Concept:The IBRD is the World Bank, so its work involves development financing, not trade policy.
Explanation:The IBRD gives long-term loans for development projects.
It also provides technical expertise to member countries.
It helps in developing human resources through education and health programs.
Reducing tariffs among members is the role of trade organisations like the WTO, not the IBRD.
Therefore, the option that is not a function of the IBRD is tariff reduction.
Answer:C. reducing tariff among members