When solving complex organizational problems,how does information flow between departments?

A) In the rumor mill
B) Through the grapevine
C) Informally
D) Vertically
E) Horizontally

The most effective way for information to flow between departments when solving complex organizational problems is through horizontal communication. This involves communication and collaboration among people at the same hierarchical level or in different areas of expertise across the organization. This allows for insights and perspectives from various departments to be shared and considered in the problem-solving process. Rumor mills, grapevines, and informal communication can often result in miscommunication and misunderstanding, and vertical communication may restrict the flow of information and perspectives.