Which of the following is NOT a form of communication?

The choice of "Sole Trader" as the option that is NOT a form of communication is correct because a sole trader refers to a type of business structure where an individual operates a business independently. This term describes a legal and economic status rather than a method of conveying information.

On the other hand, visual communication, written communication, and verbal communication are all recognized methods of sharing information. Visual communication includes images, symbols, and other visual aids; written communication involves conveying messages through written texts like reports and emails; while verbal communication pertains to the spoken exchange of ideas and information. Each of these forms plays a crucial role in effective interactions in personal and business contexts.