Many economists believe that since resources are scarce and since human desires cannot all be indulged, a method of apportionment is needed. So we can see that the correct option for the given question is option “A”. It is a fact that there is no limit to human desires of having things. This has led to the scarcity of various things like gold, food and precious stones and metals. So there has to be a system or certain restrictions to acquiring certain scarce things.