Answer:
Ideas, fluency and word choice.
Step-by-step explanation:
A good editor is not the one who follows the conventions rather the one who creates it with his intellect and innovation. The clarity of thoughts that which idea is the narrator willing to convey through the work is of supreme importance for an editor as he/she is responsible for the production of the end product which reaches to the audience. Thus, for him, it is very important to deliver the writer's message to the audience without altering or substituting it. secondly, the fluency of language should not be compromised because it may lead the readers to break away from the flow while reading. Lastly, the choice of words should justify the content of the text and provide enough clarity to connect it to the context of the book or work.