In the Keynesian model, portfolio decisions of individuals determine the

People seldom break a line while waiting for checkout in a supermarket. This is an example of a ________ to solve an externality

A) Coasian approach B) Pigouvian approach C) command and control mechanism D) social enforcement mechanism

In the figure above, if the quantity of yogurt produced increases from 2 gallons an hour to 3 gallons an hour, the opportunity cost of a gallon of yogurt in terms of ice cream is

A) half a gallon. B) 1 gallon. C) 3 gallons. D) 4 gallons.