The correct answer is (C) the curve price of the good itself.The price cannot be constant in a demand curve because the quantity demanded of a commodity depends on the price of the good or service offered.
The supply of an item might also fluctuate due to producer expectations, which are maintained constant along the supply curve. A producer would boost production today in order to sell their good at the higher market price if they anticipated that the price will fall in the future. Because the amount of a commodity is dependent on the price of the item or service being given, the price cannot be constant in a demand curve. The supply curve is moved from its initial position by the supply-influencing variables. The supply curve is unaffected by the amount of purchasers.
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