चलनवाढीचा संरचनात्मक सिद्धांत ___ यांनी मांडला होता.
a. जी. मिर्डाल
b. जे. केन्स
c. एम. फ्रिडमन
d. पी. स्ट्रीटेन

The correct answer is Option C (a and d).

Key Points:
• Structural Theory of Inflation: Unlike the traditional Demand-pull (Keynesian) or Cost-push/Monetarist (Friedman) theories, the Structuralist theory was primarily developed to explain the persistent, high inflation experienced by Latin American and other developing countries in the 1950s and 60s.
• The Core Argument: It argues that inflation in developing economies is not merely a monetary phenomenon. Instead, it is caused by deep-rooted structural imbalances and rigidities in the economy, such as agricultural bottlenecks (inelastic food supply), foreign exchange constraints, and poor infrastructure.
• Key Proponents: The prominent economists who developed and supported the structuralist approach to inflation include Gunnar Myrdal (a), Paul Streeten (d), Raul Prebisch, and Celso Furtado.
• Keynes and Friedman: J.M. Keynes (b) focused on demand-pull inflation driven by aggregate demand exceeding full-employment output. Milton Friedman (c) is the father of Monetarism, famously stating that "inflation is always and everywhere a monetary phenomenon".
• Conclusion: Therefore, Myrdal (a) and Streeten (d) are associated with the Structural theory.
• Key Takeaway: Structuralist inflation theory attributes price rises to structural bottlenecks (like inelastic agri supply), championed by Myrdal, Streeten, and Prebisch.