Final answer:
Written communication must be organized due to the absence of cues like tone of voice and facial expressions, wider audience reach, and the potential impact on others who may read the message.
Step-by-step explanation:
Written communication must be organized even more carefully than oral communication for several reasons. First, in oral communication, tone of voice and facial expressions can be used to convey emotions or attitudes, which is not possible in written communication. Without these cues, it is important to ensure that the message is clear and properly organized. Second, written communication allows for a wider audience, so it is crucial to consider the knowledge and needs of the readers. Finally, written communication can be easily saved, shared, and accessed by others, so it is important to think about the potential impact on others who may read the message.