Ok so sometimes when i do something i see a box with a question mark in it, how do i remove it, i am on a macos high sierra early 2015 and i dont know how to remove it.

That probably means that you opened and edited something in one editor than opened it in another so its probably something like that .What program is this?

Explanation:

answer; ///i believe that the correct answer is (b) to both side choose a fair and impartial jury;

because you most likely sighned up