a piece of writing should be appropriate to the writer's audience and

purpose. This means that the language, tone, and content of the writing should be tailored to fit the needs and expectations of the readers. For example, technical writing for a scientific journal would be very different from a casual blog post aimed at teenagers.

Additionally, the writer should consider the purpose of the writing - whether it is to inform, entertain, persuade, or some other goal. The structure and content of the writing should support this purpose and help the writer achieve their intended outcome.

Overall, being mindful of the audience and purpose of a piece of writing can help ensure that it is effective and engaging for its intended readers.