According to the timeline, which event occurred most recently during the Common Era?

The years are numbered according to the year in which Christ was believed to have been born. The period before that is known as B.C. (short for Before Christ) and the years after are known as A.D (short Anno Domini, and meaning the Year of our Lord).

Explanation:

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.