In the period after 1900, the role of the state in the economy varied, with many states adopting policies to control or manage their economies. Develop an argument that evaluates the extent to which one or more states controlled their economies in this time period.

the correct answer is “opportunity cost”. opportunity cost is what a company misses out because it decided in one option over another one. in this case, the company decided to invest in building a factory so it gave up another possible benefit or profit in order to achieve success with the factory.  

trade-off is not the correct answer since it is a situation in which you accept losing something in return for benefits in other areas.

and finally, consequence is a general term used to accept what it comes when you make a decision. it can be a positive or negative consequence depending if the decision you took was the correct one.  

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.