Which one of the following is the primary cause of the existence of opportunity cost?
An increase in the general price level
The scarcity of resources relative to unlimited wants
The misallocation of resources by public monopolies
A state of general equilibrium in all markets
123 exam-style questions on AQA A Level Economics 1.1 Economic methodology and the economic problem, covering 1.1.1 Economic methodology, 1.1.2 The nature and purpose of economic activity, 1.1.3 Economic resources, 1.1.4 Scarcity, choice and the allocation of resources, and 1.1.5 Production possibility diagrams. Each one has a worked solution and a mark scheme showing where the marks go.