Agovernment-created monopoly arises when
a. government spending in a certain industry gives rise to monopoly power.
b. the government exercises its market control by encouraging competition among sellers.
c. the government gives a firm the exclusive right to sell some good or service.
d. both a and c are correct.

Should the city pass a ban on skateboarders on all public property, or are the citizens who oppose the ban right when they argue that there are benefits to having the skateboarders in public parks? plan and write a response in which you state your position and persuade readers to agree with you. support your position with reasons and examples drawn from the proposed amendment to ban skateboarding and from information in the letters to the editor, as well as from your own experience.