PLEASE HELP! URGENT! Whoever answers fast enough I will mark brainliest!

Which of the following statements describes the conservation of a natural resource?

A. A timber company only cuts some trees down and replaces them with new trees.

B. A solar energy company harvests energy from sunlight.

C. A timber company cuts down all of the trees on a piece of land and does not replant them.

D. A wind energy company covers a hillside with wind turbines.