Answer: C. Fossil Fuels.
Explanation: We have an infinite amount or an ASTRONOMICALLY high supply of wind, solar energy and water- as they are all resources created or formed by our planet, when it formed. We need these things to survive, so no wonder the high availability/ quantity. Fossil fuels, however, are not organically made compounds; they take time and extensive resources to create, along with susceptibility to burning quickly. Fossil fuels do not last, therefore would be most likely to deplete first.
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