Which of the IMF's three roles today is described?

• A. Regulate national tax rates
• B. Provide military aid
• C. Surveillance of the world's economic situation
• D. Set exchange rates for member countries

Answer: (C)

The main idea being tested is the IMF's surveillance role—its ongoing monitoring and policy guidance for the world economy. The IMF continually analyzes global and country-level developments, assesses risks, and provides policy advice through reports and country reviews to help countries adjust before problems become crises. This is why describing it as surveillance of the world's economic situation fits best. The other options don’t match the IMF’s work: it doesn’t regulate national tax rates (tax policy is a domestic matter), it doesn’t provide military aid, and it doesn’t set exchange rates for member countries (rates are determined by country policy and market forces, with the IMF offering analysis and guidance rather than binding rate setting).