Answer:
C. interdependence
Explanation:
The opportunity cost of something is the cost of the next highest-valued alternative. For example, a person is going to watch a play so that person cannot do anything other than watching a play. The person cannot play football for that period of time. So, here the next best thing to watching a play is football then the opportunity cost of watching the play is the money spent for the ticket and not playing football.
Economics is the science of distribution of money among the masses.
Economic interdependence is the trading of goods and information that grows an economy. For example, a person that is an engine manufacturer might not know the properties of the material to be used so, the person depends on a material scientist for this information. So, the engine manufacturer is dependent on the material scientist forming an interdependence.
Exchange is just the bartering of goods and services.
