All situations involving communication involve at least one of the following: • an author with specific purposes, attitudes, and background • ? • a text in a particular medium, made with certain tools, and deciphered with certain tools • a context in a particular time and place involving a certain community and conversation one of the characteristics from the list above is missing. which of the following phrases correctly completes the list? a. a web master with a specific agenda b. an audience with equally specific purposes, attitudes, and background c. a power point presentation created by the writer, having a clear introduction and conclusion d. a meeting in a particular building involving members with specific purposes, attitudes, and backgrounds