What form of communication is considered more effective for immediate responses?

A phone call is considered the most effective form of communication for immediate responses due to its real-time nature, allowing for spontaneous dialogue and timely feedback. During a phone conversation, both parties can ask questions, clarify information, and respond to each other instantly, enabling a quicker resolution of issues or exchange of ideas compared to other forms of communication.

In contrast, email often involves waiting for a response and may not convey urgency as clearly. Instant messaging, while also immediate, may lack the personal touch and clarity that a phone call provides. Written memos are typically used for documentation and formal communication and do not facilitate an immediate back-and-forth exchange of information.