Structural unemployment results primarily from automation and long-lasting changes in demand

If the quantity demanded of a public good is greater than the quantity supplied,

a. an excess quantity demanded emerges, which could be eliminated (corrected) by the government decreasing taxes to allow people to buy more of the good b. it is proof that market failure exists c. it is proof that government failure exists d. an excess quantity demanded emerges, which could be eliminated (corrected) by the government increasing taxes to provide more of the good e. the market will create the supply to bring the market for the public good into equilibrium

Contestable markets improve the performance of imperfect markets with

A. government regulations. B. the threat of entry. C. advertising. D. tacit collusion.