Opportunity cost can best be defined as The monetary price of any productive resources The amount of labor that must be used to produce one unit of any product The ratio of the prices of imported goods to the prices of exported goods The amount of one product that must be given up to produce one more unit of another product. QUESTION 21 2 points Save Answer Record keeping must be uniform from one time period to another is an example of which constraints that matches the best. Objectivity Consistency Materiality Prudence