Concept:Large-scale wheat farming is a commercial agricultural practice found mainly in extensive temperate grasslands.Explanation:The Prairies of North America and the Pampas of Argentina are major world regions for large-scale mechanised wheat production.These areas have vast flat land, fertile soil, and suitable temperate climates for wheat cultivation.The other options mix regions not primarily known for large-scale wheat farming, such as the Ghezira Plains (mainly cotton) and Kano Plains.Answer:C. Prairies of North America and the Pampas of Argentina