What defines written communication?

Written communication is defined as any communication that is intended to be read. It involves the use of written symbols, such as letters and words, to convey messages, information, or ideas. This type of communication allows for clarity and permanence, as the written text can be referred back to and interpreted by readers at their convenience. This characteristic distinguishes it clearly from oral communication, which relies on spoken words and is transient in nature.

The option identifying written communication as that which "must be read" reflects the essence of the medium—it's about producing a text that requires reading for understanding. This underscores the importance of literacy and comprehension in the process of receiving and interpreting the message.

In contrast, other definitions provided do not align with the fundamental nature of written communication. For instance, communication that must be spoken pertains to verbal or oral exchange, which is not relevant here. Any communication that is performed or shared visually could encompass various forms of expression, such as gestures or visual art, but they do not specifically focus on writing as a medium. Thus, identifying written communication as that which must be read captures its key defining characteristic effectively.