Answer: C, Any time a seller and a buyer engage in a market transaction, the cost of the good or service.
The law of supply and demand combines two key economic ideas to describe how changes in the price of a resource, item, or service affect its supply and demand. Demand declines when the price rises, but supply increases. On the other hand, as the price drops, supply becomes limited and demand rises.
The price will decrease whenever there is a surplus until the surplus disappears. When the surplus is removed, the quantity supplied and the quantity required are exactly equal, meaning that producers want to sell and consumers want to buy the same amount.
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