Final answer:
Uranium is not a conventional fossil fuel energy resource, as it is used as fuel in nuclear power plants to produce electricity.
Step-by-step explanation:
The correct answer is d) Uranium. Uranium is not a conventional fossil fuel energy resource. It is a radioactive element and is used as fuel in nuclear power plants to produce electricity. The other options, coal, oil, and natural gas, are all examples of conventional fossil fuel energy resources.