Which feature enhances the clarity of a friendly text by explaining ideas?

The correct feature that enhances the clarity of a friendly text by explaining ideas is the explication of information. This involves breaking down complex ideas, providing definitions, examples, or additional context to ensure that readers understand the intended message. By clearly explaining key concepts, the text becomes more accessible and engaging, which is particularly important in friendly communication where a casual tone and clarity are essential for effective interaction.

In contrast, metadiscourse refers to the author's comments on the text itself or the writing process, which may guide the reader but does not specifically explain ideas in a straightforward manner. Conceptual density involves the amount of complex ideas packed into a piece of writing, which could actually lead to confusion rather than clarity. Text organization pertains to how information is structured within the text, aiding clarity but not necessarily focusing on the explanation of individual ideas. Explication of information directly addresses the need for clarity by making ideas clearer and more comprehensible, making it the most suitable choice in this context.