Theorists who would argue that the mass media represents the interests of society's political and economic elites would be most aligned with the perspective.

The answer would be : Conflict Perspective
In general, conflict perspective assume that society is shaped by groups who compete for power or wealth (commonly found in politics or economic market). Which became the major source of stories for news and other mass media.

Theorists who would argue that the mass media represents the interests of society's political and economic elites would most likely be aligned with an Althuseirian perspective of propaganda and public infromaton control. These people would argue that Althuser was right in the fact that the elites will try to control popular opinion with the media.