Answer:
D. Buying a second winter coat.
Step-by-step explanation:
Marginal utility ascertain the added satisfaction a consumer gets from consuming additional amount of goods and services. It brings about change in utility as an additional unit is added.
positive marginal utility occurs when consumption of an item increases the total utility . Negative marginal utility occurs when the consumption of an item decrease the total utility.
Example of a deceasing marginal utility is consuming an item again and again .At a point the consumer urge for the item began to diminish. In this case of a buying a second winter coat their is diminishing marginal utility as a little benefit is gain from the second winter coat.