Concept:The media acts as the fourth estate by serving as a watchdog over the government for the benefit of citizens.Explanation:The term "fourth estate" refers to the press and news media.It is called so because it works alongside the three arms of government.The media investigates and reports on government activities.Its main duty is to inform the public and expose wrongdoing.By doing this, it keeps the government accountable to the citizens.Therefore, the media monitors the government on behalf of the people.Answer:A. people