coal from mountain deposits oil and gas from underground reservoirs electric energy from hydroelectric generators minerals from mining gold, silver, and copper
I gave my students this multiple choice question: The Humboldt River Basin is one of the most important sources of several nonrenewable resources. Which of these nonrenewable resources is produced from the Humboldt River Basin?

Only one answer is correct among these 4 choices:
- coal from mountain deposits
- oil and gas from underground reservoirs
- electric energy from hydroelectric generators
- minerals from mining gold, silver, and copper

Could you tell me which one is correct?

minerals from mining gold, silver, and copper