When you are in the revision stage, you should correct your word choices. Option D is correct.
Revision does not refere to the improvement of grammar or diction. Those will be the focus of later editing.
Revision is the stage in the writing process where the author reviews, changes, and amends their message, in accordance to what has been written in the draft.
During a succesful revision the author should identificate the thesis, considerate the structure and uncover weakness in argument or presentation.
It would be "d. Your word choices" that you correct when you are in the revision stage since this is the most important, but all the other items should be checked soon as well.
A line of reasoning that presents the opposite side of the author's argument is called (I believe) a counterargument. It states exactly the different thing from what you have first stated.
What makes human experience authentic is that the human experience as a collective is something that is inherently subjective and unique for each single person
