A. B. C. or D? .

Explanation:

Look for keywords in question

not having enough resources

this goes under scarcity... the condition that results from society not having enough resources to produce all of the things people would like to have...

(population is amount of people, animals, that type of thing)

(scarcity means lack of, not having enough)

(surplus means having more than needed, extra)

(plague means bacterial outbreak, cause continual trouble or distress to)

lmk if this helps XD

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.  

he sent troops to protect the students as they entered the school.