An example of a resource that is not renewable, regardless of how well we manage it, is

A) timber.
B) fossil fuels.
C) seafood.
D) wind.

Fossil fuels, such as coal, oil, and natural gas, are formed over millions of years from the remains of ancient plants and animals. Once they are extracted and burned, they cannot be replaced on a human timescale. Therefore, they are considered non-renewable resources, regardless of how well we manage their use.