Which of the following is a barrier to communication in aircrew coordination?

Word usage serves as a barrier to communication in aircrew coordination because it encompasses the choice of specific terms and jargon that may not be universally understood by all members of the aircrew. In aviation, effective communication is crucial for safety and operational effectiveness; therefore, if certain words or phrases are used that are unfamiliar to some team members, it can lead to misunderstandings, mistakes, or misinterpretations of important information. Specifically, technical jargon or acronyms might be second nature to one person but completely obscure to another, which can hinder the coordination needed among crew members to perform tasks safely and efficiently.

In contrast, clarity, focus, and timeliness enhance communication by ensuring messages are understood, concentrating on critical information, and addressing messages promptly. Such aspects support effective aircrew coordination rather than create barriers.