The amount that people are willing to pay for each additional unit of a product or service is the
a. opportunity cost
b. marginal benefit
c. marginal cost
d. investment opportunity

The amount that people are willing to pay for each additional unit of a product or service is the "Marginal benefit".

A marginal benefit is an extra fulfillment or utility that a man gets from devouring an extra unit of a decent or benefit. A man's marginal benefit is the most extreme sum he will pay to devour that extra unit of a decent or benefit. In a typical circumstance, the minimal advantage diminishes as utilization increments.  

Marginal benefits typically decrease as a purchaser chooses to devour increasingly of a solitary decent. Marginal benefits have applications for organizations, particularly with regards to promoting and research.

the answer is B marginal benefit

Explanation:

i took the test

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.