The main pathways of metabolism in brain are______________? September 27, 2025 by Admin A. Glycolysis and citric acid cycle B. Glycogenolysis and Gluconeogenesis C. Embden-Meyerhof Pathway and H.M.P shunt D. Glycogenolysis and Citric and cycle ✅ The correct answer is option A. Glycolysis and citric acid cycle.