Could you give the synonym of "opportunity" here?

[Lolita]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #293 "Economics Questions test (1)", question 8

Whether it's a natural resource or not, every possible use of a resource is called an ..........

(a) opportunity
(b) shortage
(c) costs

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #293 "Economics Questions test (1)", answer 8

Whether it's a natural resource or not, every possible use of a resource is called an opportunity.

Correct answer: (a) opportunity

Your answer was: correct
_________________________

Could you give the synonym of "opportunity" here?

Lolita

[Mister Micawber]

.
This seems to be a rather specialized use of the word, Lolita. 'Possible use' seems closer than any other word that occurs to me. 'Potential' is close, but is uncountable.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber