the tree fell when a swing hit it when the apple fell
What story are you talking about?
I believe its D- plane:train
I hope this helped!!
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.