Answer:
would leave the market first if the price were any lower.
Explanation:
Utility can be defined as any satisfaction or benefits a customer derives from the use of a product or service.
Thus, any satisfaction or benefits a customer derives from the use of a product or service is generally referred to as a utility.
In Economics, The law of diminishing marginal utility states that as the unit of a good or service consumed by an individual increases, the additional satisfaction he or she derives from consuming additional units would start decreasing or diminishing as the units of good or service consumed increases.
A marginal seller refers to an individual or business firm that is most willing to sell his or her goods and services at a price that is typically equal to their economic cost while forfeiting producer surplus.
A producer surplus is the amount a buyer is willing to pay for a good minus the cost of producing the good.
Hence, a marginal seller is the seller who would leave the market first if the price were any lower.