Which of the following was not a way Alaska proved its' worth? By rich oil resources

With gold discoveries

Theough defensive location

As a rich trading center

I want to say the answer is C

I believe the answer here is C

Alaska could have potential military implementation but I don’t believe that’s how it proved it’s worth

Air pollution: “combustion results in gases such as nitrogen oxides, nitrogen dioxide and particulates. the main causes of air pollution include transport, domestic combustion and industrial processes. pollutants from these sources can cause problems in the immediate vicinity and a distance away.”