Minerals and fossil fuels are not renewable (well, they are, but not in a human timescale, but in a timescale of thousands if not millions of years). - b. and c. are wrong
d. is definitely a renewable resource: no matter how much we use, we can still use more. (this would be the correct answer)
about a.): I am not too sure how to understand this. If by land the question means soil, then soil can be spent, but also it can recover - depending on how badly "spent" it was before.
