Diminishing marginal returns are most compatible with: April 30, 2021 – by admin Question: Diminishing marginal returns are most compatible with: A. Economies of scale. B. Advantages from specialization. C. Positively-sloped marginal cost curves D. Depreciation of the capital stock. Answer» b. Advantages from specialization. Note: The above multiple-choice question is for all general and Competitive Exams in India.