If one person's enjoyment of the benefits of a good ________ with another's consumption of it, the good is nonrival in consumption. This is a characteristic of a ________ good.

A free market fails when

A) firms that produce goods which create positive externalities go bankrupt. B) firms that produce goods which create negative externalities earn high profits. C) there is an external effect in either production, consumption, or both. D) there is government intervention.

The movement in U.S. population from the farms to urban areas was caused primarily by

a. each member of a farm family specializing in a particular set of tasks b. a sharp increase in farm productivity c. a decline in the demand for labor in urban areas d. a sharp decline in the demand for agricultural products e. increased education among married women