Answer:
D) Our resources are unable to satisfy all our wants
Step-by-step explanation:
Scarcity is the main starting point for all economic studies. It is simple, all resources are scarce, and humans always want more and that need exceeds all the available resources.
Even the largest corporations in the world or the richest people have limited resources, their limits may be extremely large, but nonetheless the limits exist, e.g. Apple has $210.6 billion in cash, but only that amount.