Renewable resources a. can be replenished over months, years, or decades b. are all living resources c. have finite supplies that will one day be used up d. include iron, natural gas, and copper

Hello there!  A)Can be replenished over months, years, or decades.​  Renewable resources can be re-made, so If we were to run out of something it just can be re-made over a few months, years, decades.