Answer:
A
Explanation:
Marginal benefit is the benefit derived from consuming one extra unit of a good
. Marginal benefit is the additional benefit derived from consuming one more unit of a good. the consumption decision is to consume more units of a good that gives the higher benefit per good.
Marginal benefit decreases as consumption increases
An example of marginal benefit.
Imagine a traveller arriving from the desert where he hadn't had a drink of water in days .he is offered his first glass of water. the first cup of water he drinks would give him the highest benefit. As more and more cups of water is drank, marginal benefit decreases. At the point where he is fully satisfied, he stops drinking water and marginal benefit becomes zero.