The country has a potential to exploit more mineral resources.

The correct answer is: B. possibility

A possibility is something that might happen. In this case, the country has the potential to exploit more mineral resources, which means that it is possible for them to do so.

The other options are:

• A. fortune – good luck or success, especially when unexpected.
• C.
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  capacity – the ability to do something.
• D. luck – chance or fortune, especially when good.

None of these options accurately describe the situation in the question.