Focusing on a writer's use of support would be the most helpful one when feedback for revision is to be provided.
A person or an artist who is involved in expression of literary composition of forms such novels, stories or any such form of textual representation except for a poem or a song, is known as a writer.
A writer must organize the text in a good representable way such that use of support is expressed. It helps to maintain the correct structure of the text and becomes easily readable and understandable.
Hence, option C holds true regarding a writer.
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