Answer: C) Leave as is
Explanation: So, let's figure out the defenition of revision. Revision means to edit or form of something.
I really don't understand how the other options will make the sentence flow better, therefore it has to be C
Let me know if i'm right or wrong :D
For short answer skip the ones you don't know and then go back to them at the end. Write the essays first so you don't run out of time. If you don't know the material fully just put down what you do know and then reword it a few ways to make your essay longer. Also, look for clues in the other test questions that could give you information on either responses. Hope that helped!