Which example describes and nonrenewable resource?

a. everyone in our neighborhood uses solar panels to generate electricity to run their pool pumps.
b. once up and running, the power plant will convert the energy from tides and waves into electricity.
c. there is a long stretch of land in the desert with the many windmills that are able to generate enough electricity to run to town.
d. there are drilling platforms all along the coast that all used to drill for natural gas that can be used to generate electricity.