Which process stage of writing focuses on refining sentence structure and checking for grammar errors?

The process stage of writing that focuses on refining sentence structure and checking for grammar errors is indeed editing. During the editing phase, writers meticulously review their text to correct grammatical mistakes, enhance clarity, and improve overall flow. This step is crucial because it ensures that the writing meets the standards of correct language usage, making it more readable and professional.

In editing, writers may also pay attention to punctuation, word choice, and formatting, which further polish their work. This stage occurs after drafting, where the main ideas are put into place but may still contain rough edges that need to be smoothed out for clarity and correctness. Thus, the emphasis in editing is on fine-tuning the text and ensuring it conveys the intended message effectively and accurately.