Question

which of these are fossil fuels?
olive oil, unleaded, and wood
bauxite, charcoal, and soil
natural gas, oil, and coal
jet fuel, graphite, and lead

Answer 1

The correct answer is most certainly the third option, or C.)
"Fossil fuels - fuels derived from the remains of dead organisms. Examples include coal, oil, oil shales, tar sands, natural gas, and peat. Hydrocarbons are molecules that incorporate both carbon and hydrogen."
Source: http://geoscience.wisc.edu/~chuck/Geo106/lect24.html