Question

which of the following best matches the description? known deposits from which materials can be extracted profitably under current economic and technological conditions. select one: a. photovoltaic cell b. overburden c. underground mining d. reserves e. acid mine drainage f. black lung disease g. surface mining h. renewable energy sources i. nonrenewable energy sources j. secondary recovery k. resources l. active solar system m. liquefied natural gas n. geothermal energy o. passive solar system

Explanation:

Reserves are known deposits from which materials can be extracted profitably under current economic and technological conditions. Other options refer to different aspects like energy - related concepts, mining - related processes or mining - related health issues and are not the correct match for the given description.

Answer:

D. reserves