The answer is capital. I hope this helps!
Answers I believe I'm not exactly very sure ,
Carrying capacity in an ecosystem is the amount of organisms an ecosystem can hold. Some of the factors that affect the carrying capacity is
▪What kind of organism
▪ How big the ecosystem is
▪Where the ecosystem is located
▪How much food is available to the organisms
The correct choices in the questions above is the third choice, where it meets a social need and improve the economy. It is because when they spend money in education, it reaches and meets the social need of the persons who are not capable of studying because of their lacking and it also improves economy because when students graduate, they could enter jobs where they could help rise and improve the economy in the country.