Choose the statements that explain the purpose of using a production possibilities curve. A)
It illustrates trade-offs made in an economy.
B)
It indicates the allocatively efficient point.
C)
It indicates the productively efficient points.
D)
It illustrates the the profit-maximizing quantity and price.
E)
It illustrates the equilibrium quantity and price for an industry.

answer; the above statement/question is ( true);

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.