You'll want to leave it out. if it isn't conducive to the content of your paper, it's more like a distraction from what you're trying to say. parentheses might be a "safe" way to signify a side topic, but it weakens the paper as a general statement because the reader has to pause and take a moment to absorb a new topic before going back to what you were saying
I would do (page 2) just to be on the safe side, but i think (2) would also work
Answer: the correct answer is D) Will thought about what his father had been trying to teach him, put down his controller, and pushed a button he never before had wanted to press: OFF.
<span>C seems right! It's the only one that is actually using physical descriptors to describe feelings of pain.</span>