Answer:
C. It stops them from fulfilling all of their wants.
Step-by-step explanation:
Scarcity forces the average person to stop buying a particular item because it costs too much. If there is a high demand and low supply, prices will skyrocket and the middle class cannot afford this. This is just me making up a random explanation because I know the answer is C but I don't know why.
Hope this helps. Let me know.