The correct answer to the question is 'Clarification', as it is not a direct approach to communication like writing or listening. Clarification serves as a technique to ensure understanding but does not function as a standalone method of conveying messages. Writing and listening are essential methods of communication in both personal and professional settings.
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The option that is not an approach to communication is 'Clarification', as it is a technique used to enhance understanding but not a direct method of communication like writing or listening. The other options are recognized forms of communication. Therefore, the correct choice is 'Clarification'. ;