What of the following statements is th eeconomic rule that explains why we stop purchasing goods and services after we have consumed some?

The economic rule that explains why we stop purchasing goods and services after consuming some is known as the law of diminishing marginal utility. This principle states that as we consume more units of a good or service, the additional satisfaction (or utility) gained from each subsequent unit decreases. Eventually, the marginal utility becomes less than the price we have to pay, leading us to cease consumption. Consequently, consumers make decisions based on the balance between the utility gained and the cost incurred.