Answer :
It is choice "c" because a nonrenewable source is one that is consumed more rapidly than it is produced.
It is NOT "a" because while they may burn quickly, that isn't what makes it a nonrenewable source. The problem or factor that makes it nonrenewable source is it's inability to produce more faster than it is consumed.
It is NOT "a" because while they may burn quickly, that isn't what makes it a nonrenewable source. The problem or factor that makes it nonrenewable source is it's inability to produce more faster than it is consumed.