Final answer:
The law of demand indicates that buyers are more likely to purchase more of a product when its price declines, with the quantity demanded inversely related to the product's price.
Step-by-step explanation:
The law of demand is a fundamental principle in economics that describes the relationship between the price of a good and the quantity demanded by consumers. The best statement to summarize the law of demand is: S. Buyers are more interested in purchasing products as those products decline in price. This principle asserts that, ceteris paribus (all other factors being equal), as the price of a good increases, the quantity of the good demanded will decrease. Conversely, as the price of a good decreases, the quantity demanded will increase. This occurs because a higher price generally means a higher opportunity cost for buyers, leading them to purchase less or substitute the product with a cheaper alternative.