Question

which element is mined, processed, and concentrated into fuel rods to be used at nuclear power plants? a thorium b helium c uranium d potassium

Explanation:

Uranium is mined, processed, and concentrated into fuel rods for use in nuclear power plants. Thorium can also be used in nuclear - power related processes but is not as commonly used as uranium for fuel rods currently. Helium is a noble gas and not used as nuclear fuel. Potassium is a common element in many chemical and biological processes but not used for nuclear fuel rods.

Answer:

C. Uranium