Answer:
The correct answer is: 2.
Explanation:
Marginal Benefit is an economic term that describes the maximum amount a consumer is willing to pay for an additional unit of a good or service. Typically, the marginal benefit decreases as a person repeatedly consumes more of that good or service.
In the example, the marginal benefit of hiring the third worker will be represented by the difference in the productivity of hiring three workers instead of two. Thus,
Marginal benefit = Productivity of three workers - Productivity of two workers
Marginal benefit = 18 - 16
Marginal benefit = 2