In order to create an effective marketing plan,it is important for the managers of the marketing,research and development,and communications departments to collaborate.Which type of communication does this require?

A) upward communication
B) downward communication
C) horizontal communication
D) outward communication

The collaboration required between the managers of different departments suggests a need for horizontal communication, which involves communication between people at the same level of the organizational hierarchy. Upward communication involves communication from lower-level employees to higher-level employees, while downward communication involves communication from higher-level employees to lower-level employees. Outward communication involves communication with stakeholders outside of the organization.