Factors of production are ______.
A、the mathematical calculations firms make in determining their optimal production levels
B、social and political conditions that affect production
C、the physical relationships between economic inputs and outputs
D、inputs into the production process
Factors of production are ______. A、the mathematical calcul - 3. Circular-Flow Diagram and PPF - 微观经济学(全英) - 重庆高校在线开放课程平台 | 大学网课搜题引擎