Concept:Mass media shapes public perception by choosing which stories to emphasize, a process called agenda-setting.Explanation:Mass media does not primarily aim for a low cover price, nor is it owned by the poor masses. It also does not earn most of its revenue from subscriptions. Instead, its key role is agenda-setting. The media selects and highlights certain issues, making them seem more important to the public. This influences what people think about and consider newsworthy. Agenda-setting does not tell us what to think, but guides our attention toward specific topics. Therefore, among the given options, the correct statement is that mass media sets agendas for deciding stories.Answer:Option B: They set agendas for deciding stories.