<em>I think it is proofreading because when you proofread you are looking at the spelling, grammar, and the context. And you can fix it all when you proofread it. </em>
And a revision process you should focus on proofreading. Proofreading is the stage in which a writer or editor examines the text carefully in an attempt to detect all the mistakes and errors that he could have made in the raw text written, with the purpose of correcting them. When proofreading a person can check the context, grammar, spelling, accuracy, style and correct or fix any of those aspects if necessary.
It is in the introduction and then restated in the conclusion. Each supporting detail is then referred to in each of the body paragraphs one by one. The question is worded very oddly in my opinion so I would say introduction because it fits that answer best, but it could technically be all of them.
