Which of the following cannot be classified as a natural resource?

A. iron rod
B. wildlife
C. solar energy
D. gold

Correct Answer: Option C

C. solar energy

Explanation

A natural resource is what people can use which comes from the natural environment. Examples of natural resources are air, water, wood, oil, wind energy, natural gas, iron, and coal. Solar energy is man-made which has the sun as its basic source of energy